diff --git a/apps/openmw/mwgui/class.cpp b/apps/openmw/mwgui/class.cpp
index 9573d22377..5a03e269cf 100644
--- a/apps/openmw/mwgui/class.cpp
+++ b/apps/openmw/mwgui/class.cpp
@@ -383,7 +383,6 @@ namespace MWGui
 
     InfoBoxDialog::InfoBoxDialog()
         : WindowModal("openmw_infobox.layout")
-        , mControllerFocus(0)
     {
         getWidget(mTextBox, "TextBox");
         getWidget(mText, "Text");
@@ -525,7 +524,6 @@ namespace MWGui
         : WindowModal("openmw_chargen_create_class.layout")
         , mAffectedAttribute(nullptr)
         , mAffectedSkill(nullptr)
-        , mControllerFocus(2)
     {
         // Centre dialog
         center();
@@ -962,7 +960,6 @@ namespace MWGui
 
         if (Settings::gui().mControllerMenus)
         {
-            mControllerFocus = 0;
             if (mAttributeButtons.size() > 0)
                 mAttributeButtons[0]->setStateSelected(true);
 
@@ -1063,7 +1060,6 @@ namespace MWGui
 
         if (Settings::gui().mControllerMenus)
         {
-            mControllerFocus = 0;
             if (mSkillButtons.size() > 0)
                 mSkillButtons[0]->setStateSelected(true);
 
diff --git a/apps/openmw/mwgui/class.hpp b/apps/openmw/mwgui/class.hpp
index 5a769e15bd..3755ab5f58 100644
--- a/apps/openmw/mwgui/class.hpp
+++ b/apps/openmw/mwgui/class.hpp
@@ -51,7 +51,7 @@ namespace MWGui
         MyGUI::TextBox* mText;
         MyGUI::Widget* mButtonBar;
         std::vector<MyGUI::Button*> mButtons;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 
     // Lets the player choose between 3 ways of creating a class
@@ -218,7 +218,7 @@ namespace MWGui
         void onAttributeClicked(Widgets::MWAttributePtr _sender);
         void onCancelClicked(MyGUI::Widget* _sender);
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
         std::vector<Widgets::MWAttribute*> mAttributeButtons;
 
     private:
@@ -252,12 +252,12 @@ namespace MWGui
         void onSkillClicked(Widgets::MWSkillPtr _sender);
         void onCancelClicked(MyGUI::Widget* _sender);
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
         std::vector<Widgets::MWSkill*> mSkillButtons;
 
     private:
         ESM::RefId mSkillId;
-        std::array<size_t, 3> mNumSkillsPerSpecialization;
+        std::array<size_t, 3> mNumSkillsPerSpecialization{};
 
         void selectNextColumn(int direction);
     };
@@ -353,7 +353,7 @@ namespace MWGui
         Widgets::MWSkillPtr mAffectedSkill;
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 2;
     };
 }
 #endif
diff --git a/apps/openmw/mwgui/itemchargeview.hpp b/apps/openmw/mwgui/itemchargeview.hpp
index 73bf9c3de2..fd0388d83a 100644
--- a/apps/openmw/mwgui/itemchargeview.hpp
+++ b/apps/openmw/mwgui/itemchargeview.hpp
@@ -75,7 +75,7 @@ namespace MWGui
         MyGUI::ScrollView* mScrollView;
         DisplayMode mDisplayMode;
 
-        int mControllerFocus;
+        int mControllerFocus = 0;
         void updateControllerFocus(int prevFocus, int newFocus);
     };
 }
diff --git a/apps/openmw/mwgui/itemview.hpp b/apps/openmw/mwgui/itemview.hpp
index 6243618abc..1e2ab8817f 100644
--- a/apps/openmw/mwgui/itemview.hpp
+++ b/apps/openmw/mwgui/itemview.hpp
@@ -54,7 +54,7 @@ namespace MWGui
         MyGUI::ScrollView* mScrollView;
 
         int mItemCount = 0;
-        int mRows;
+        int mRows = 1;
         int mControllerFocus = 0;
         bool mControllerActiveWindow;
         void updateControllerFocus(int prevFocus, int newFocus);
diff --git a/apps/openmw/mwgui/journalwindow.hpp b/apps/openmw/mwgui/journalwindow.hpp
index 6122bf70c7..472065d565 100644
--- a/apps/openmw/mwgui/journalwindow.hpp
+++ b/apps/openmw/mwgui/journalwindow.hpp
@@ -25,16 +25,15 @@ namespace MWGui
             std::shared_ptr<JournalViewModel> model, bool questList, ToUTF8::FromType encoding);
 
         /// destroy this instance of the JournalWindow implementation
-        virtual ~JournalWindow() {}
+        virtual ~JournalWindow() = default;
 
         /// show/hide the journal window
         void setVisible(bool newValue) override = 0;
 
         std::string_view getWindowIdForLua() const override { return "Journal"; }
 
-        size_t mIndexRowCount;
-
         std::vector<MyGUI::Button*> mButtons;
+        size_t mIndexRowCount = 1;
         size_t mSelectedQuest = 0;
         size_t mSelectedIndex = 0;
         void moveSelectedIndex(int offset);
diff --git a/apps/openmw/mwgui/levelupdialog.hpp b/apps/openmw/mwgui/levelupdialog.hpp
index 70bd2839f2..5176d1866b 100644
--- a/apps/openmw/mwgui/levelupdialog.hpp
+++ b/apps/openmw/mwgui/levelupdialog.hpp
@@ -53,7 +53,7 @@ namespace MWGui
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
         std::vector<MyGUI::Button*> mAttributeButtons;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 
 }
diff --git a/apps/openmw/mwgui/mapwindow.hpp b/apps/openmw/mwgui/mapwindow.hpp
index 9a474e8170..379141fb61 100644
--- a/apps/openmw/mwgui/mapwindow.hpp
+++ b/apps/openmw/mwgui/mapwindow.hpp
@@ -225,7 +225,7 @@ namespace MWGui
         MyGUI::Button* mDeleteButton;
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        int mControllerFocus;
+        int mControllerFocus = 0;
     };
 
     class MapWindow : public MWGui::WindowPinnableBase, public LocalMapBase, public NoDrop
diff --git a/apps/openmw/mwgui/merchantrepair.hpp b/apps/openmw/mwgui/merchantrepair.hpp
index 28fb2a7c3c..119258f7ad 100644
--- a/apps/openmw/mwgui/merchantrepair.hpp
+++ b/apps/openmw/mwgui/merchantrepair.hpp
@@ -27,7 +27,7 @@ namespace MWGui
 
         MWWorld::Ptr mActor;
 
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
 
     protected:
         void onMouseWheel(MyGUI::Widget* _sender, int _rel);
diff --git a/apps/openmw/mwgui/messagebox.hpp b/apps/openmw/mwgui/messagebox.hpp
index 98eb69cc69..d48223d1a4 100644
--- a/apps/openmw/mwgui/messagebox.hpp
+++ b/apps/openmw/mwgui/messagebox.hpp
@@ -116,7 +116,7 @@ namespace MWGui
         int mButtonPressed;
         size_t mDefaultFocus;
         bool mImmediate;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 
 }
diff --git a/apps/openmw/mwgui/quickkeysmenu.cpp b/apps/openmw/mwgui/quickkeysmenu.cpp
index 782949b99a..a7c408f1f9 100644
--- a/apps/openmw/mwgui/quickkeysmenu.cpp
+++ b/apps/openmw/mwgui/quickkeysmenu.cpp
@@ -40,7 +40,6 @@ namespace MWGui
         , mKey(std::vector<keyData>(10))
         , mSelected(nullptr)
         , mActivated(nullptr)
-        , mControllerFocus(0)
     {
         getWidget(mOkButton, "OKButton");
         getWidget(mInstructionLabel, "InstructionLabel");
@@ -506,7 +505,6 @@ namespace MWGui
     QuickKeysMenuAssign::QuickKeysMenuAssign(QuickKeysMenu* parent)
         : WindowModal("openmw_quickkeys_menu_assign.layout")
         , mParent(parent)
-        , mControllerFocus(0)
     {
         getWidget(mLabel, "Label");
         getWidget(mItemButton, "ItemButton");
diff --git a/apps/openmw/mwgui/quickkeysmenu.hpp b/apps/openmw/mwgui/quickkeysmenu.hpp
index 11648cdb40..30cd893c84 100644
--- a/apps/openmw/mwgui/quickkeysmenu.hpp
+++ b/apps/openmw/mwgui/quickkeysmenu.hpp
@@ -75,7 +75,7 @@ namespace MWGui
         void assignItem(MWWorld::Ptr item);
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 
     class QuickKeysMenuAssign : public WindowModal
@@ -93,7 +93,7 @@ namespace MWGui
         QuickKeysMenu* mParent;
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        int mControllerFocus;
+        int mControllerFocus = 0;
     };
 
     class MagicSelectionDialog : public WindowModal
@@ -114,7 +114,7 @@ namespace MWGui
         void onModelIndexSelected(SpellModel::ModelIndex index);
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        int mControllerFocus;
+        int mControllerFocus = 0;
     };
 }
 
diff --git a/apps/openmw/mwgui/review.hpp b/apps/openmw/mwgui/review.hpp
index cd3fc594a7..78d88887db 100644
--- a/apps/openmw/mwgui/review.hpp
+++ b/apps/openmw/mwgui/review.hpp
@@ -104,7 +104,7 @@ namespace MWGui
 
         // 0 = Name, 1 = Race, 2 = Class, 3 = BirthSign, 4 = Back, 5 = OK
         std::vector<MyGUI::Button*> mButtons;
-        int mControllerFocus;
+        int mControllerFocus = 0;
     };
 }
 #endif
diff --git a/apps/openmw/mwgui/spellbuyingwindow.hpp b/apps/openmw/mwgui/spellbuyingwindow.hpp
index a53b57cc09..ad47749228 100644
--- a/apps/openmw/mwgui/spellbuyingwindow.hpp
+++ b/apps/openmw/mwgui/spellbuyingwindow.hpp
@@ -58,7 +58,7 @@ namespace MWGui
     private:
         static bool sortSpells(const ESM::Spell* left, const ESM::Spell* right);
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 }
 
diff --git a/apps/openmw/mwgui/spellcreationdialog.hpp b/apps/openmw/mwgui/spellcreationdialog.hpp
index f2c440d305..8d96a9727d 100644
--- a/apps/openmw/mwgui/spellcreationdialog.hpp
+++ b/apps/openmw/mwgui/spellcreationdialog.hpp
@@ -94,7 +94,7 @@ namespace MWGui
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
         void updateControllerFocus(int prevFocus, int newFocus);
-        int mControllerFocus;
+        int mControllerFocus = 0;
         std::vector<MyGUI::TextBox*> mButtons;
     };
 
diff --git a/apps/openmw/mwgui/trainingwindow.hpp b/apps/openmw/mwgui/trainingwindow.hpp
index f44c5524f5..c6c9cdf5c8 100644
--- a/apps/openmw/mwgui/trainingwindow.hpp
+++ b/apps/openmw/mwgui/trainingwindow.hpp
@@ -55,7 +55,7 @@ namespace MWGui
         TimeAdvancer mTimeAdvancer;
 
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 
 }
diff --git a/apps/openmw/mwgui/travelwindow.hpp b/apps/openmw/mwgui/travelwindow.hpp
index c0002b805b..4b155e4535 100644
--- a/apps/openmw/mwgui/travelwindow.hpp
+++ b/apps/openmw/mwgui/travelwindow.hpp
@@ -42,7 +42,7 @@ namespace MWGui
 
     private:
         bool onControllerButtonEvent(const SDL_ControllerButtonEvent& arg) override;
-        size_t mControllerFocus;
+        size_t mControllerFocus = 0;
     };
 }
 
diff --git a/apps/openmw/mwgui/windowmanagerimp.hpp b/apps/openmw/mwgui/windowmanagerimp.hpp
index 81294d3cd4..991e3c1c00 100644
--- a/apps/openmw/mwgui/windowmanagerimp.hpp
+++ b/apps/openmw/mwgui/windowmanagerimp.hpp
@@ -511,7 +511,7 @@ namespace MWGui
         std::vector<GuiMode> mGuiModes;
         // The active window for controller mode for each GUI mode.
         std::map<GuiMode, int> mActiveControllerWindows;
-        bool mControllerTooltip;
+        bool mControllerTooltip = false;
 
         void reapplyActiveControllerWindow();