diff --git a/src/battle_ai_main.c b/src/battle_ai_main.c
index fe3ff13ee2..9789aa8339 100644
--- a/src/battle_ai_main.c
+++ b/src/battle_ai_main.c
@@ -4134,6 +4134,32 @@ static u32 AI_CalcMoveEffectScore(u32 battlerAtk, u32 battlerDef, u32 move)
         ADJUST_SCORE(IncreaseStatUpScore(battlerAtk, battlerDef, STAT_CHANGE_ATK));
         ADJUST_SCORE(IncreaseStatUpScore(battlerAtk, battlerDef, STAT_CHANGE_SPATK));
         break;
+    case EFFECT_ROTOTILLER:
+            if (IS_BATTLER_OF_TYPE(battlerAtk, TYPE_GRASS) && IsBattlerGrounded(battlerAtk))
+            {
+                ADJUST_SCORE(IncreaseStatUpScore(battlerAtk, battlerDef, STAT_CHANGE_ATK));
+                ADJUST_SCORE(IncreaseStatUpScore(battlerAtk, battlerDef, STAT_CHANGE_SPATK));
+            }
+            if (hasPartner && IS_BATTLER_OF_TYPE(BATTLE_PARTNER(battlerAtk), TYPE_GRASS) && IsBattlerGrounded(BATTLE_PARTNER(battlerAtk)))
+            {
+                ADJUST_SCORE(IncreaseStatUpScore(BATTLE_PARTNER(battlerAtk), battlerDef, STAT_CHANGE_ATK));
+                ADJUST_SCORE(IncreaseStatUpScore(BATTLE_PARTNER(battlerAtk), battlerDef, STAT_CHANGE_SPATK));
+            }
+            if (IS_BATTLER_OF_TYPE(FOE(battlerAtk), TYPE_GRASS) && IsBattlerGrounded(FOE(battlerAtk)))
+            {
+                if (aiData->abilities[FOE(battlerAtk)] == ABILITY_CONTRARY)
+                    ADJUST_SCORE(WEAK_EFFECT);
+                else
+                    ADJUST_SCORE(AWFUL_EFFECT);
+            }
+            if (IS_BATTLER_OF_TYPE(BATTLE_PARTNER(FOE(battlerAtk)), TYPE_GRASS) && IsBattlerGrounded(BATTLE_PARTNER(FOE(battlerAtk))))
+            {
+                if (aiData->abilities[BATTLE_PARTNER(FOE(battlerAtk))] == ABILITY_CONTRARY)
+                    ADJUST_SCORE(WEAK_EFFECT);
+                else
+                    ADJUST_SCORE(AWFUL_EFFECT);
+            }
+            break;
     case EFFECT_HAZE:
         if (AnyStatIsRaised(BATTLE_PARTNER(battlerAtk))
           || DoesPartnerHaveSameMoveEffect(BATTLE_PARTNER(battlerAtk), battlerDef, move, aiData->partnerMove))
diff --git a/test/battle/move_effect/rototiller.c b/test/battle/move_effect/rototiller.c
index 73ad6c9c85..7214133110 100644
--- a/test/battle/move_effect/rototiller.c
+++ b/test/battle/move_effect/rototiller.c
@@ -96,3 +96,19 @@ SINGLE_BATTLE_TEST("Rototiller fails if the only valid target is semi-invulnerab
         EXPECT_EQ(opponent->statStages[STAT_SPATK], DEFAULT_STAT_STAGE);
     }
 }
+
+AI_DOUBLE_BATTLE_TEST("AI uses Rototiller")
+{
+    GIVEN {
+        ASSUME(GetSpeciesType(SPECIES_TANGELA, 0) == TYPE_GRASS);
+        ASSUME(GetSpeciesType(SPECIES_WOBBUFFET, 0) != TYPE_GRASS);
+        ASSUME(GetSpeciesType(SPECIES_WOBBUFFET, 1) != TYPE_GRASS);
+        AI_FLAGS(AI_FLAG_CHECK_BAD_MOVE | AI_FLAG_CHECK_VIABILITY | AI_FLAG_TRY_TO_FAINT | AI_FLAG_OMNISCIENT);
+        PLAYER(SPECIES_WOBBUFFET) { Moves(MOVE_POUND, MOVE_CELEBRATE); }
+        PLAYER(SPECIES_WOBBUFFET) { Moves(MOVE_POUND, MOVE_CELEBRATE); }
+        OPPONENT(SPECIES_TANGELA) { Moves(MOVE_ROTOTILLER, MOVE_POUND); }
+        OPPONENT(SPECIES_TANGELA);
+    } WHEN {
+        TURN {  EXPECT_MOVE(opponentLeft, MOVE_ROTOTILLER); }
+    }
+}