diff --git a/mlua-sys/src/lua53/lauxlib.rs b/mlua-sys/src/lua53/lauxlib.rs
index 67cde638..258ab301 100644
--- a/mlua-sys/src/lua53/lauxlib.rs
+++ b/mlua-sys/src/lua53/lauxlib.rs
@@ -51,7 +51,7 @@ extern "C-unwind" {
     pub fn luaL_checkudata(L: *mut lua_State, ud: c_int, tname: *const c_char) -> *mut c_void;
 
     pub fn luaL_where(L: *mut lua_State, lvl: c_int);
-    pub fn luaL_error(L: *mut lua_State, fmt: *const c_char, ...) -> !;
+    pub fn luaL_error(L: *mut lua_State, fmt: *const c_char, ...) -> c_int;
 
     pub fn luaL_checkoption(
         L: *mut lua_State,
diff --git a/mlua-sys/src/lua54/lauxlib.rs b/mlua-sys/src/lua54/lauxlib.rs
index 9ce7d0cd..5be2ba6b 100644
--- a/mlua-sys/src/lua54/lauxlib.rs
+++ b/mlua-sys/src/lua54/lauxlib.rs
@@ -50,7 +50,7 @@ extern "C-unwind" {
     pub fn luaL_checkudata(L: *mut lua_State, ud: c_int, tname: *const c_char) -> *mut c_void;
 
     pub fn luaL_where(L: *mut lua_State, lvl: c_int);
-    pub fn luaL_error(L: *mut lua_State, fmt: *const c_char, ...) -> !;
+    pub fn luaL_error(L: *mut lua_State, fmt: *const c_char, ...) -> c_int;
 
     pub fn luaL_checkoption(
         L: *mut lua_State,