diff --git a/Core/FileSystems/MetaFileSystem.cpp b/Core/FileSystems/MetaFileSystem.cpp
index 5cb50c7e01..898af97f41 100644
--- a/Core/FileSystems/MetaFileSystem.cpp
+++ b/Core/FileSystems/MetaFileSystem.cpp
@@ -30,7 +30,7 @@ static bool ApplyPathStringToComponentsVector(std::vector<std::string> &vector,
 	while (start < len)
 	{
 		// TODO: This should only be done for ms0:/ etc.
-		size_t i = pathString.find_first_of('/\\', start);
+		size_t i = pathString.find_first_of("/\\", start);
 		if (i == std::string::npos)
 			i = len;