diff --git a/src/filesystem.cpp b/src/filesystem.cpp
index 8b5c6c1..ed83bbe 100644
--- a/src/filesystem.cpp
+++ b/src/filesystem.cpp
@@ -540,9 +540,10 @@ void set_preferences_dir(std::string path)
        //allow absolute path override
        game_config::preferences_dir = path;
    } else {
-       WINAPI BOOL (*SHGetSpecialFolderPath)(HWND, LPTSTR, int, BOOL);
+       typedef BOOL (WINAPI *SHGSFPAddress)(HWND, LPTSTR, int, BOOL);
+       SHGSFPAddress SHGetSpecialFolderPath;
        HMODULE module = LoadLibrary("shell32");
-       SHGetSpecialFolderPath = (WINAPI BOOL (*)(HWND, LPTSTR, int, BOOL))GetProcAddress(module, "SHGetSpecialFolderPathA");
+       SHGetSpecialFolderPath = (SHGSFPAddress)GetProcAddress(module, "SHGetSpecialFolderPathA");
        if(SHGetSpecialFolderPath) {
            LOG_FS << "Using SHGetSpecialFolderPath to find My Documents\n";
            char my_documents_path[MAX_PATH];