diff --git a/include/battle.h b/include/battle.h
index 4068454bf4..fde4162c73 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -932,5 +932,6 @@ extern bool8 gHasFetchedBall;
 extern u8 gLastUsedBall;
 extern u16 gLastThrownBall;
 extern bool8 gSwapDamageCategory; // Photon Geyser, Shell Side Arm, Light That Burns the Sky
+extern u8 gPartyCriticalHits[PARTY_SIZE];
 
 #endif // GUARD_BATTLE_H
diff --git a/src/pokemon.c b/src/pokemon.c
index fe2bcf9dd7..71176d2eb6 100644
--- a/src/pokemon.c
+++ b/src/pokemon.c
@@ -5394,21 +5394,6 @@ u16 GetEvolutionTargetSpecies(struct Pokemon *mon, u8 mode, u16 evolutionItem)
             }
         }
         break;
-    #ifdef BATTLE_ENGINE
-    // Battle evolution without leveling; party slot is being passed into the evolutionItem arg.
-    case EVO_MODE_BATTLE_SPECIAL:
-        for (i = 0; i < EVOS_PER_MON; i++)
-        {
-            switch (gEvolutionTable[species][i].method)
-            {
-            case EVO_CRITICAL_HITS:
-                if (gPartyCriticalHits[evolutionItem] >= gEvolutionTable[species][i].param)
-                    targetSpecies = gEvolutionTable[species][i].targetSpecies;
-                break;
-            }
-        }
-        break;
-    #endif
     }
 
     return targetSpecies;