diff --git a/src/client/client.cpp b/src/client/client.cpp
index 36d4f8df9..5d4793c8a 100644
--- a/src/client/client.cpp
+++ b/src/client/client.cpp
@@ -1913,7 +1913,7 @@ const std::string* Client::getModFile(std::string filename)
 	if (pos == std::string::npos)
 		return nullptr;
 	pos++;
-	auto pos2 = filename.find_first_not_of("/", pos);
+	auto pos2 = filename.find_first_not_of('/', pos);
 	if (pos2 > pos)
 		filename.erase(pos, pos2 - pos);
 
diff --git a/util/travis/clang-format-whitelist.txt b/util/travis/clang-format-whitelist.txt
index 466ffd789..30d1e9e1c 100644
--- a/util/travis/clang-format-whitelist.txt
+++ b/util/travis/clang-format-whitelist.txt
@@ -349,6 +349,7 @@ src/script/cpp_api/s_server.h
 src/script/lua_api/l_areastore.cpp
 src/script/lua_api/l_base.cpp
 src/script/lua_api/l_base.h
+src/script/lua_api/l_client.cpp
 src/script/lua_api/l_craft.cpp
 src/script/lua_api/l_craft.h
 src/script/lua_api/l_env.cpp