diff --git a/cde/lib/tt/bin/shell/mover.C b/cde/lib/tt/bin/shell/mover.C
index f801c231b..264f50a41 100644
--- a/cde/lib/tt/bin/shell/mover.C
+++ b/cde/lib/tt/bin/shell/mover.C
@@ -35,7 +35,7 @@
 #include "tt_options.h"
 #include <errno.h>
 #include <string.h>
-#ifdef __osf__
+#if defined(__osf__) || defined(linux)
 #include <unistd.h>
 #else
 #if !defined(USL) && !defined(__uxp__)