diff --git a/autogen/lua_definitions/constants.lua b/autogen/lua_definitions/constants.lua
index 5109e9b6..e6ca3b06 100644
--- a/autogen/lua_definitions/constants.lua
+++ b/autogen/lua_definitions/constants.lua
@@ -3524,6 +3524,9 @@ ENVFX_LAVA_BUBBLES = 12
 --- @type integer
 ENVFX_MODE_NONE = 0
 
+--- @type integer
+ENVFX_MODE_NO_OVERRIDE = -1
+
 --- @type integer
 ENVFX_SNOW_BLIZZARD = 3
 
diff --git a/docs/lua/constants.md b/docs/lua/constants.md
index 08b99a7a..fad9143c 100644
--- a/docs/lua/constants.md
+++ b/docs/lua/constants.md
@@ -1198,6 +1198,7 @@
 - ENVFX_JETSTREAM_BUBBLES
 - ENVFX_LAVA_BUBBLES
 - ENVFX_MODE_NONE
+- ENVFX_MODE_NO_OVERRIDE
 - ENVFX_SNOW_BLIZZARD
 - ENVFX_SNOW_NORMAL
 - ENVFX_SNOW_WATER
diff --git a/src/game/envfx_snow.h b/src/game/envfx_snow.h
index b0842192..63acd736 100644
--- a/src/game/envfx_snow.h
+++ b/src/game/envfx_snow.h
@@ -9,13 +9,15 @@
 #define ENVFX_SNOW_WATER    2  // Secret Aquarium, Sunken Ship
 #define ENVFX_SNOW_BLIZZARD 3  // unused
 
-#define ENVFX_BUBBLE_START      10 // Separates snow effects and flower/bubble effects
+#define ENVFX_BUBBLE_START      10 // separates snow effects and flower/bubble effects
 
 #define ENVFX_FLOWERS           11 // unused
 #define ENVFX_LAVA_BUBBLES      12 // LLL, BitFS, Bowser 2
 #define ENVFX_WHIRLPOOL_BUBBLES 13 // DDD
 #define ENVFX_JETSTREAM_BUBBLES 14 // JRB, DDD (submarine area)
 
+#define ENVFX_MODE_NO_OVERRIDE -1 // used for set_override_envfx()
+
 struct EnvFxParticle {
     s8 isAlive;
     s16 animFrame; // lava bubbles and flowers have frame animations
diff --git a/src/pc/lua/smlua_constants_autogen.c b/src/pc/lua/smlua_constants_autogen.c
index f9786a92..0fdf098d 100644
--- a/src/pc/lua/smlua_constants_autogen.c
+++ b/src/pc/lua/smlua_constants_autogen.c
@@ -1394,6 +1394,7 @@ char gSmluaConstants[] = ""
 "ENVFX_LAVA_BUBBLES = 12\n"
 "ENVFX_WHIRLPOOL_BUBBLES = 13\n"
 "ENVFX_JETSTREAM_BUBBLES = 14\n"
+"ENVFX_MODE_NO_OVERRIDE = -1\n"
 "SEQ_PLAYER_LEVEL = 0\n"
 "SEQ_PLAYER_ENV = 1\n"
 "SEQ_PLAYER_SFX = 2\n"