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-rw-r--r--sysdeps/unix/sysv/linux/sleep.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sleep.c b/sysdeps/unix/sysv/linux/sleep.c
index a4cf47bb0b..e669541eed 100644
--- a/sysdeps/unix/sysv/linux/sleep.c
+++ b/sysdeps/unix/sysv/linux/sleep.c
@@ -19,6 +19,7 @@ not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
 #include <time.h>
+#include <unistd.h>
 
 unsigned int
 sleep (unsigned int seconds)