diff --git a/src/include/libpq/hba.h b/src/include/libpq/hba.h
index c49f30c61d9..c111e427311 100644
--- a/src/include/libpq/hba.h
+++ b/src/include/libpq/hba.h
@@ -11,6 +11,7 @@
 #ifndef HBA_H
 #define HBA_H
 
+#include "libpq/pqcomm.h"
 #include "nodes/pg_list.h"