diff --git a/Source/nragev20/PakIO.h b/Source/nragev20/PakIO.h
index d8bd176dd..720654d24 100644
--- a/Source/nragev20/PakIO.h
+++ b/Source/nragev20/PakIO.h
@@ -170,4 +170,16 @@ typedef struct _ADAPTOIDPAK
 	bool fRumblePak;
 } ADAPTOIDPAK, *LPADAPTOIDPAK;
 
+/*
+ * <windef.h> from under <windows.h> with MSVC defines these macros.
+ * For some reason, they are unavailable with MinGW's copy of <windows.h>.
+ */
+#ifndef max
+#define max(a, b)       (((a) > (b)) ? (a) : (b))
+#endif
+
+#ifndef min
+#define min(a, b)       (((a) < (b)) ? (a) : (b))
+#endif
+
 #endif // #ifndef _PAKIO_H_