diff --git a/include/battle_ai_main.h b/include/battle_ai_main.h
index c90a4fae6a..a385d7ce21 100644
--- a/include/battle_ai_main.h
+++ b/include/battle_ai_main.h
@@ -116,6 +116,5 @@ void Ai_UpdateSwitchInData(u32 battler);
 void Ai_UpdateFaintData(u32 battler);
 void SetAiLogicDataForTurn(struct AiLogicData *aiData);
 void ResetDynamicAiFunc(void);
-u32 BattleAI_PredictMove(u32 battler, u32 opposingBattler);
 
 #endif // GUARD_BATTLE_AI_MAIN_H
diff --git a/include/config/general.h b/include/config/general.h
index 323b94d314..1bb70ce00d 100644
--- a/include/config/general.h
+++ b/include/config/general.h
@@ -6,7 +6,7 @@
 // still has them in the ROM. This is because the developers forgot
 // to define NDEBUG before release, however this has been changed as
 // Ruby's actual debug build does not use the AGBPrint features.
-// #define NDEBUG
+#define NDEBUG
 
 // To enable printf debugging, comment out "#define NDEBUG". This allows
 // the various AGBPrint functions to be used. (See include/gba/isagbprint.h).