diff --git a/constants/battle_anim_constants.asm b/constants/battle_anim_constants.asm
index bf6b45e5a01..b82af5d2114 100644
--- a/constants/battle_anim_constants.asm
+++ b/constants/battle_anim_constants.asm
@@ -713,6 +713,9 @@ DEF NUM_BATTLEANIMFRAMESETS EQU const_value
 	const BATTLEANIMOAMSET_D7
 DEF NUM_BATTLEANIMOAMSETS EQU const_value
 
+assert NUM_BATTLEANIMOAMSETS <= FIRST_OAM_CMD, \
+	"BATTLEANIMOAMSET_* constants overlap oam*_command constants"
+
 ; BattleBGEffects indexes (see engine/battle_anims/bg_effects.asm)
 	const_def 1
 	const ANIM_BG_FLASH_INVERTED
diff --git a/constants/sprite_anim_constants.asm b/constants/sprite_anim_constants.asm
index 96bc9a6e89b..c46ad9726d6 100644
--- a/constants/sprite_anim_constants.asm
+++ b/constants/sprite_anim_constants.asm
@@ -342,3 +342,6 @@ DEF NUM_SPRITE_ANIM_FRAMESETS EQU const_value
 	const SPRITE_ANIM_OAMSET_MAGNET_TRAIN_GREEN_1        ; 8e
 	const SPRITE_ANIM_OAMSET_MAGNET_TRAIN_GREEN_2        ; 8f
 DEF NUM_SPRITE_ANIM_OAMSETS EQU const_value
+
+assert NUM_SPRITE_ANIM_OAMSETS <= FIRST_OAM_CMD, \
+	"SPRITE_ANIM_OAMSET_* constants overlap oam*_command constants"
diff --git a/macros/scripts/oam_anims.asm b/macros/scripts/oam_anims.asm
index f3fa9bfbe4d..2bd751cfbc4 100644
--- a/macros/scripts/oam_anims.asm
+++ b/macros/scripts/oam_anims.asm
@@ -36,3 +36,5 @@ ENDM
 MACRO oamdelete
 	db oamdelete_command
 ENDM
+
+DEF FIRST_OAM_CMD EQU LOW(const_value + 1)