diff --git a/dirmngr/ks-engine-ldap.c b/dirmngr/ks-engine-ldap.c
index c2a210542..d404a04ac 100644
--- a/dirmngr/ks-engine-ldap.c
+++ b/dirmngr/ks-engine-ldap.c
@@ -31,6 +31,8 @@
 #  define WINVER 0x0500  /* Same as in common/sysutils.c */
 # endif
 # include <winsock2.h>
+# include <winldap.h>
+# include <winber.h>
 # include <sddl.h>
 #endif