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-rw-r--r--usr.bin/talk/look_up.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/usr.bin/talk/look_up.c b/usr.bin/talk/look_up.c
index 1ccf23c..7a66e6f 100644
--- a/usr.bin/talk/look_up.c
+++ b/usr.bin/talk/look_up.c
@@ -45,6 +45,7 @@ static const char sccsid[] = "@(#)look_up.c 8.1 (Berkeley) 6/6/93";
#include <errno.h>
#include <string.h>
+#include <unistd.h>
#include "talk_ctl.h"
#include "talk.h"
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