diff --git a/userspace/falco/webserver.h b/userspace/falco/webserver.h
index 2144d16e..5927d845 100644
--- a/userspace/falco/webserver.h
+++ b/userspace/falco/webserver.h
@@ -14,6 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+#pragma once
+
 #include <memory>
 
 #include "CivetServer.h"