diff --git a/src/script/lua_api/l_util.cpp b/src/script/lua_api/l_util.cpp
index c1e883a98c29902734998709a5997bfe288ea001..c04f09f9016232e4ebb4fe079e5180deb2244552 100644
--- a/src/script/lua_api/l_util.cpp
+++ b/src/script/lua_api/l_util.cpp
@@ -388,6 +388,8 @@ int ModApiUtil::l_request_insecure_environment(lua_State *L)
 	// Check secure.trusted_mods
 	const char *mod_name = lua_tostring(L, -1);
 	std::string trusted_mods = g_settings->get("secure.trusted_mods");
+	trusted_mods.erase(std::remove(trusted_mods.begin(),
+			trusted_mods.end(), ' '), trusted_mods.end());
 	std::vector<std::string> mod_list = str_split(trusted_mods, ',');
 	if (std::find(mod_list.begin(), mod_list.end(), mod_name) ==
 			mod_list.end()) {