diff --git a/sysdep.h b/sysdep.h
index f992970..63936dd 100644
--- a/sysdep.h
+++ b/sysdep.h
@@ -42,13 +42,17 @@
 #    error Target not supported.
 #endif
 
-#if defined(UNIX) || defined(DJGPP)
+#if defined(UNIX) || defined(DJGPP) || defined(WATCOM)
 #    define USE_DIRENT
 #endif
 
 #if defined(USE_DIRENT) // also needs fnmatch
+#ifdef WATCOM
+#    include <direct.h>
+#else
 #    include <dirent.h>
 #endif
+#endif
 
 #if defined(UNIX)
 #    include <unistd.h>