diff --git a/src/player/troll.h b/src/player/troll.h
index bde9f12..2f60257 100644
--- a/src/player/troll.h
+++ b/src/player/troll.h
@@ -8,7 +8,7 @@ class troll final: public player_base {
 public:
         troll(RNG *rng, const feature enabled_features);
         const char *get_race_name() const override;
-	void start_turn();
+        void start_turn() override;
 };
 
 #endif