diff --git a/lauxlib.h b/lauxlib.h
index 0ee9a572..3c370686 100644
--- a/lauxlib.h
+++ b/lauxlib.h
@@ -100,7 +100,7 @@ LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
 
 LUALIB_API lua_State *(luaL_newstate) (void);
 
-LUALIB_API unsigned int luaL_makeseed (lua_State *L);
+LUALIB_API unsigned luaL_makeseed (lua_State *L);
 
 LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
 
diff --git a/ltablib.c b/ltablib.c
index 2ba31a4f..4c3f6900 100644
--- a/ltablib.c
+++ b/ltablib.c
@@ -63,7 +63,7 @@ static int tcreate (lua_State *L) {
   lua_Unsigned sizerest = (lua_Unsigned)luaL_optinteger(L, 2, 0);
   luaL_argcheck(L, sizeseq <= UINT_MAX, 1, "out of range");
   luaL_argcheck(L, sizerest <= UINT_MAX, 2, "out of range");
-  lua_createtable(L, sizeseq, sizerest);
+  lua_createtable(L, (unsigned)sizeseq, (unsigned)sizerest);
   return 1;
 }
 
diff --git a/lua.h b/lua.h
index face93fa..b6934e68 100644
--- a/lua.h
+++ b/lua.h
@@ -160,8 +160,7 @@ extern const char lua_ident[];
 /*
 ** state manipulation
 */
-LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud,
-                                   unsigned int seed);
+LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud, unsigned seed);
 LUA_API void       (lua_close) (lua_State *L);
 LUA_API lua_State *(lua_newthread) (lua_State *L);
 LUA_API int        (lua_closethread) (lua_State *L, lua_State *from);
diff --git a/testes/main.lua b/testes/main.lua
index dde72a74..5c7d0a10 100644
--- a/testes/main.lua
+++ b/testes/main.lua
@@ -312,7 +312,7 @@ setmetatable({}, {__gc = function ()
   -- this finalizer should not be called, as object will be
   -- created after 'lua_close' has been called
   setmetatable({}, {__gc = function () print(3) end})
-  print(collectgarbage())    -- cannot call collector here
+  print(collectgarbage() or false)    -- cannot call collector here
   os.exit(0, true)
 end})
 ]]
@@ -322,7 +322,7 @@ creating 1
 creating 2
 2
 creating 3
-nil
+false
 1
 ]]