diff --git a/include/tscore/EnumDescriptor.h b/include/tscore/EnumDescriptor.h
index 485a5c3db59..f1c4b5075a4 100644
--- a/include/tscore/EnumDescriptor.h
+++ b/include/tscore/EnumDescriptor.h
@@ -19,6 +19,8 @@
   limitations under the License.
 */
 
+#pragma once
+
 #include <string_view>
 #include <unordered_map>