diff --git a/apps/openmw/mwmechanics/npcstats.cpp b/apps/openmw/mwmechanics/npcstats.cpp
index 0f5d2c95e..f2b7df6cb 100644
--- a/apps/openmw/mwmechanics/npcstats.cpp
+++ b/apps/openmw/mwmechanics/npcstats.cpp
@@ -157,6 +157,9 @@ void MWMechanics::NpcStats::increaseSkill(int skillIndex, const ESM::Class &clas
 
     int level = static_cast<int> (base);
 
+    if (level == 100)
+        return;
+
     if (preserveProgress)
         base += 1;
     else