diff --git a/apps/openmw/mwmechanics/stat.hpp b/apps/openmw/mwmechanics/stat.hpp
index 77b3f6364..e66cf86de 100644
--- a/apps/openmw/mwmechanics/stat.hpp
+++ b/apps/openmw/mwmechanics/stat.hpp
@@ -231,6 +231,7 @@ namespace MWMechanics
     {
         float mProgress;
     public:
+        SkillValue() : mProgress(0) {}
         float getProgress() const { return mProgress; }
         void setProgress(float progress) { mProgress = progress; }
     };