diff --git a/components/esm/loadnpc.hpp b/components/esm/loadnpc.hpp
index 27e1ebeee..9913466b0 100644
--- a/components/esm/loadnpc.hpp
+++ b/components/esm/loadnpc.hpp
@@ -62,7 +62,7 @@ struct NPC
     struct NPDTstruct52
     {
         short mLevel;
-        char mStrength,
+        unsigned char mStrength,
              mIntelligence,
              mWillpower,
              mAgility,