diff --git a/apps/openmw/mwmechanics/npcstats.hpp b/apps/openmw/mwmechanics/npcstats.hpp
index aeb5f56d5..59bfa2ac0 100644
--- a/apps/openmw/mwmechanics/npcstats.hpp
+++ b/apps/openmw/mwmechanics/npcstats.hpp
@@ -2,6 +2,7 @@
 #define GAME_MWMECHANICS_NPCSTATS_H
 
 #include <map>
+#include <set>
 
 #include "stat.hpp"
 
@@ -25,6 +26,9 @@ namespace MWMechanics
         bool mSneak;
         bool mCombat;
 
+        std::set<std::string> mKnownSpells;
+        std::string mSelectedSpell; // can be an empty string (no spell selected)
+
         NpcStats() : mForceRun (false), mForceSneak (false), mRun (false), mSneak (false),
             mCombat (false) {}
     };