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-rw-r--r--libXt/src/Shell.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libXt/src/Shell.c b/libXt/src/Shell.c
index e0580ee4b..c0003a2a1 100644
--- a/libXt/src/Shell.c
+++ b/libXt/src/Shell.c
@@ -89,6 +89,7 @@ in this Software without prior written authorization from The Open Group.
#endif
#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
#ifdef EDITRES
#include <X11/Xmu/Editres.h>