diff --git a/src/Back.cpp b/src/Back.cpp
index 4167bab3..b51b63db 100644
--- a/src/Back.cpp
+++ b/src/Back.cpp
@@ -30,7 +30,10 @@ BOOL InitBack(const char *fName, int type)
 
 	if (fgetc(fp) != 'B' || fgetc(fp) != 'M')
 	{
+#ifdef FIX_BUGS
+		// The original game forgets to close fp
 		fclose(fp);
+#endif
 		return FALSE;
 	}