diff --git a/doomgeneric/doomtype.h b/doomgeneric/doomtype.h
index aab7cbe..a225c64 100644
--- a/doomgeneric/doomtype.h
+++ b/doomgeneric/doomtype.h
@@ -83,7 +83,7 @@ typedef uint8_t byte;
 
 #include <limits.h>
 
-#ifdef _WIN32
+#if defined(_WIN32) || defined(__DJGPP__)
 
 #define DIR_SEPARATOR '\\'
 #define DIR_SEPARATOR_S "\\"