diff --git a/src/filepath.cpp b/src/filepath.cpp
index 4aaaa58..0771b82 100644
--- a/src/filepath.cpp
+++ b/src/filepath.cpp
@@ -7,6 +7,10 @@
 #include <bx/os.h>
 #include <bx/readerwriter.h>
 
+#if BX_PLATFORM_WINDOWS
+extern "C" __declspec(dllimport) uint32_t __stdcall GetTempPathA(uint32_t _max, const char* _ptr);
+#endif // BX_PLATFORM_WINDOWS
+
 namespace bx
 {
 	static bool isPathSeparator(char _ch)