diff --git a/src/battle_anim_bug.c b/src/battle_anim_bug.c
index 14abc88fb..377665684 100644
--- a/src/battle_anim_bug.c
+++ b/src/battle_anim_bug.c
@@ -203,7 +203,7 @@ static void AnimMegahornHorn(struct Sprite *sprite)
         gBattleAnimArgs[2] = -gBattleAnimArgs[2];
         gBattleAnimArgs[0] = -gBattleAnimArgs[0];
     }
-    else if (!GetBattlerSide(gBattleAnimTarget))
+    else if (GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER)
     {
         StartSpriteAffineAnim(sprite, 1);
         gBattleAnimArgs[1] = -gBattleAnimArgs[1];
@@ -230,7 +230,7 @@ static void AnimLeechLifeNeedle(struct Sprite *sprite)
         gBattleAnimArgs[0] = -gBattleAnimArgs[0];
         StartSpriteAffineAnim(sprite, 2);
     }
-    else if (!GetBattlerSide(gBattleAnimTarget))
+    else if (GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER)
     {
         gBattleAnimArgs[1] = -gBattleAnimArgs[1];
         gBattleAnimArgs[0] = -gBattleAnimArgs[0];
@@ -301,7 +301,7 @@ static void AnimStringWrap(struct Sprite *sprite)
         sprite->x += gBattleAnimArgs[0];
 
     sprite->y += gBattleAnimArgs[1];
-    if (!GetBattlerSide(gBattleAnimTarget))
+    if (GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER)
         sprite->y += 8;
 
     sprite->callback = AnimStringWrap_Step;
diff --git a/src/battle_anim_fire.c b/src/battle_anim_fire.c
index 72d802f19..2ac00f443 100644
--- a/src/battle_anim_fire.c
+++ b/src/battle_anim_fire.c
@@ -926,7 +926,7 @@ static void CreateEruptionLaunchRocks(u8 spriteId, u8 taskId, u8 activeSpritesId
     u16 y = GetEruptionLaunchRockInitialYPos(spriteId);
     u16 x = gSprites[spriteId].x;
 
-    if(!GetBattlerSide(gBattleAnimAttacker))
+    if(GetBattlerSide(gBattleAnimAttacker) == B_SIDE_PLAYER)
     {
         x -= 12;
         sign = 1;
diff --git a/src/battle_anim_flying.c b/src/battle_anim_flying.c
index 8609a8e17..746e3bdd7 100644
--- a/src/battle_anim_flying.c
+++ b/src/battle_anim_flying.c
@@ -910,8 +910,8 @@ static void AnimWhirlwindLine(struct Sprite * sprite)
     else
         InitSpritePosToAnimTarget(sprite, FALSE);
 
-    if ((gBattleAnimArgs[2] == ANIM_ATTACKER && !GetBattlerSide(gBattleAnimAttacker))
-        || (gBattleAnimArgs[2] == ANIM_TARGET && !GetBattlerSide(gBattleAnimTarget)))
+    if ((gBattleAnimArgs[2] == ANIM_ATTACKER && GetBattlerSide(gBattleAnimAttacker) == B_SIDE_PLAYER)
+        || (gBattleAnimArgs[2] == ANIM_TARGET && GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER))
     {
         sprite->x += 8;
     }
diff --git a/src/battle_anim_mon_movement.c b/src/battle_anim_mon_movement.c
index 09393a2a7..8a11c2c5b 100644
--- a/src/battle_anim_mon_movement.c
+++ b/src/battle_anim_mon_movement.c
@@ -885,11 +885,11 @@ void AnimTask_RotateMonSpriteToSide(u8 taskId)
     {
         if (gBattleAnimArgs[2] == ANIM_ATTACKER)
         {
-            gTasks[taskId].data[7] = !GetBattlerSide(gBattleAnimAttacker);
+            gTasks[taskId].data[7] = GetBattlerSide(gBattleAnimAttacker) == B_SIDE_PLAYER;
         }
         else
         {
-            gTasks[taskId].data[7] = !GetBattlerSide(gBattleAnimTarget);
+            gTasks[taskId].data[7] = GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER;
         }
     }
     if (gTasks[taskId].data[7])
diff --git a/src/battle_anim_mons.c b/src/battle_anim_mons.c
index 4ce33251a..f8fc5647e 100644
--- a/src/battle_anim_mons.c
+++ b/src/battle_anim_mons.c
@@ -2519,7 +2519,7 @@ void AnimWeatherBallUp(struct Sprite *sprite)
 {
     sprite->x = GetBattlerSpriteCoord(gBattleAnimAttacker, BATTLER_COORD_X_2);
     sprite->y = GetBattlerSpriteCoord(gBattleAnimAttacker, BATTLER_COORD_Y_PIC_OFFSET);
-    if (!GetBattlerSide(gBattleAnimAttacker))
+    if (GetBattlerSide(gBattleAnimAttacker) == B_SIDE_PLAYER)
         sprite->data[0] = 5;
     else
         sprite->data[0] = -10;
@@ -2545,7 +2545,7 @@ void AnimWeatherBallDown(struct Sprite *sprite)
     sprite->data[0] = gBattleAnimArgs[2];
     sprite->data[2] = sprite->x + gBattleAnimArgs[4];
     sprite->data[4] = sprite->y + gBattleAnimArgs[5];
-    if (!GetBattlerSide(gBattleAnimTarget))
+    if (GetBattlerSide(gBattleAnimTarget) == B_SIDE_PLAYER)
     {
         x = (u16)gBattleAnimArgs[4] + 30;
         sprite->x += x;