1 files changed, 7 insertions, 0 deletions
diff --git a/src/util.h b/src/util.h
index c1f8934..7429f5f 100644
--- a/src/util.h
+++ b/src/util.h
@@ -15,6 +15,10 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+#ifndef UTIL_H
+#define UTIL_H
+
+
 #include <stddef.h>
 
 
@@ -97,3 +101,6 @@ void msleep(int ms);
 GCC_ONLY(__attribute__((pure, nonnull)))
 int verify_utf8(const char* restrict string, int allow_modified_nul);
 
+
+#endif
+