diff --git a/apps/openmw/mwclass/creature.cpp b/apps/openmw/mwclass/creature.cpp
index 8404b9523..192bdf2ce 100644
--- a/apps/openmw/mwclass/creature.cpp
+++ b/apps/openmw/mwclass/creature.cpp
@@ -251,7 +251,7 @@ namespace MWClass
 
         float hitchance = MWMechanics::getHitChance(ptr, victim, ref->mBase->mData.mCombat);
 
-        if(OEngine::Misc::Rng::rollProbability() >= hitchance/100.0f)
+        if(OEngine::Misc::Rng::roll0to99() >= hitchance)
         {
             victim.getClass().onHit(victim, 0.0f, false, MWWorld::Ptr(), ptr, false);
             MWMechanics::reduceWeaponCondition(0.f, false, weapon, ptr);
diff --git a/apps/openmw/mwclass/npc.cpp b/apps/openmw/mwclass/npc.cpp
index 1d58dc87e..3ca57aca8 100644
--- a/apps/openmw/mwclass/npc.cpp
+++ b/apps/openmw/mwclass/npc.cpp
@@ -515,7 +515,7 @@ namespace MWClass
 
         float hitchance = MWMechanics::getHitChance(ptr, victim, ptr.getClass().getSkill(ptr, weapskill));
 
-        if (OEngine::Misc::Rng::rollProbability() >= hitchance / 100.0f)
+        if (OEngine::Misc::Rng::roll0to99() >= hitchance)
         {
             othercls.onHit(victim, 0.0f, false, weapon, ptr, false);
             MWMechanics::reduceWeaponCondition(0.f, false, weapon, ptr);
diff --git a/apps/openmw/mwgui/pickpocketitemmodel.cpp b/apps/openmw/mwgui/pickpocketitemmodel.cpp
index bc7c5528e..b8ac20f99 100644
--- a/apps/openmw/mwgui/pickpocketitemmodel.cpp
+++ b/apps/openmw/mwgui/pickpocketitemmodel.cpp
@@ -20,7 +20,7 @@ namespace MWGui
         {
             for (size_t i = 0; i<mSourceModel->getItemCount(); ++i)
             {
-                if (chance <= OEngine::Misc::Rng::roll0to99())
+                if (OEngine::Misc::Rng::roll0to99() > chance)
                     mHiddenItems.push_back(mSourceModel->getItem(i));
             }
         }
diff --git a/apps/openmw/mwmechanics/combat.cpp b/apps/openmw/mwmechanics/combat.cpp
index c5fc34507..045f0108c 100644
--- a/apps/openmw/mwmechanics/combat.cpp
+++ b/apps/openmw/mwmechanics/combat.cpp
@@ -187,7 +187,7 @@ namespace MWMechanics
         int skillValue = attacker.getClass().getSkill(attacker,
                                            weapon.getClass().getEquipmentSkill(weapon));
 
-        if (OEngine::Misc::Rng::rollProbability() >= getHitChance(attacker, victim, skillValue) / 100.0f)
+        if (OEngine::Misc::Rng::roll0to99() >= getHitChance(attacker, victim, skillValue))
         {
             victim.getClass().onHit(victim, 0.0f, false, projectile, attacker, false);
             MWMechanics::reduceWeaponCondition(0.f, false, weapon, attacker);
diff --git a/apps/openmw/mwmechanics/mechanicsmanagerimp.cpp b/apps/openmw/mwmechanics/mechanicsmanagerimp.cpp
index da8d49db0..c829154e2 100644
--- a/apps/openmw/mwmechanics/mechanicsmanagerimp.cpp
+++ b/apps/openmw/mwmechanics/mechanicsmanagerimp.cpp
@@ -737,7 +737,7 @@ namespace MWMechanics
         float x = 0;
         float y = 0;
 
-        float roll = OEngine::Misc::Rng::rollClosedProbability() * 100;
+        int roll = OEngine::Misc::Rng::roll0to99();
 
         if (type == PT_Admire)
         {