diff --git a/lib/roblox_emulator/src/runner/instance/instance.rs b/lib/roblox_emulator/src/runner/instance/instance.rs
index 0ed070307..380aa3200 100644
--- a/lib/roblox_emulator/src/runner/instance/instance.rs
+++ b/lib/roblox_emulator/src/runner/instance/instance.rs
@@ -475,9 +475,9 @@ static CLASS_FUNCTION_DATABASE:CFD=phf::phf_map!{
 		"GetService"=>GET_SERVICE,
 	},
 	"Terrain"=>phf::phf_map!{
-		"FillBall"=>cf!(|_lua,_,_:(Vector3,Number,crate::runner::r#enum::EnumItem)|mlua::Result::Ok(())),
-		"FillBlock"=>cf!(|_lua,_,_:(crate::runner::cframe::CFrame,Vector3,crate::runner::r#enum::EnumItem)|mlua::Result::Ok(())),
-		"SetMaterialColor"=>cf!(|_lua,_,_:(crate::runner::r#enum::EnumItem,crate::runner::color3::Color3)|mlua::Result::Ok(())),
+		"FillBall"=>cf!(|_lua,_,_:(Vector3,Number,crate::runner::r#enum::CoerceEnum)|mlua::Result::Ok(())),
+		"FillBlock"=>cf!(|_lua,_,_:(crate::runner::cframe::CFrame,Vector3,crate::runner::r#enum::CoerceEnum)|mlua::Result::Ok(())),
+		"SetMaterialColor"=>cf!(|_lua,_,_:(crate::runner::r#enum::CoerceEnum,crate::runner::color3::Color3)|mlua::Result::Ok(())),
 	},
 	"Players"=>phf::phf_map!{
 		"players"=>GET_PLAYERS,