diff --git a/apps/openmw/mwgui/tooltips.cpp b/apps/openmw/mwgui/tooltips.cpp
index b3cc19a64..44ee6cac1 100644
--- a/apps/openmw/mwgui/tooltips.cpp
+++ b/apps/openmw/mwgui/tooltips.cpp
@@ -414,11 +414,11 @@ namespace MWGui
 
         const MyGUI::IntPoint padding(8, 8);
 
-        const int maximumWidth = 500;
-
         const int imageCaptionHPadding = (caption != "" ? 8 : 0);
         const int imageCaptionVPadding = (caption != "" ? 4 : 0);
 
+        const int maximumWidth = MyGUI::RenderManager::getInstance().getViewSize().width - imageCaptionHPadding * 2;
+
         std::string realImage = MWBase::Environment::get().getWindowManager()->correctIconPath(image);
 
         MyGUI::EditBox* captionWidget = mDynamicToolTipBox->createWidget<MyGUI::EditBox>("NormalText", MyGUI::IntCoord(0, 0, 300, 300), MyGUI::Align::Left | MyGUI::Align::Top, "ToolTipCaption");