diff --git a/pause/pause.c b/pause/pause.c
index ffbceb69..c3066ddc 100644
--- a/pause/pause.c
+++ b/pause/pause.c
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+#define _GNU_SOURCE
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>