diff --git a/constants/battle_anim_constants.asm b/constants/battle_anim_constants.asm
index bf6b45e5a..b82af5d21 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 bc8d3b1bb..1f9297393 100644
--- a/constants/sprite_anim_constants.asm
+++ b/constants/sprite_anim_constants.asm
@@ -334,3 +334,6 @@ DEF NUM_SPRITE_ANIM_FRAMESETS EQU const_value
 	const SPRITE_ANIM_OAMSET_GAMEFREAK_LOGO_10           ; 8a
 	const SPRITE_ANIM_OAMSET_GAMEFREAK_LOGO_11           ; 8b
 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 f3fa9bfbe..2bd751cfb 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)