diff --git a/src/backend/port/win32_shmem.c b/src/backend/port/win32_shmem.c
index a537bb35ea5..8d0cc898406 100644
--- a/src/backend/port/win32_shmem.c
+++ b/src/backend/port/win32_shmem.c
@@ -13,6 +13,7 @@
 #include "postgres.h"
 
 #include "miscadmin.h"
+#include "storage/dsm.h"
 #include "storage/ipc.h"
 #include "storage/pg_shmem.h"