diff --git a/servers/slapd/overlays/memberof.c b/servers/slapd/overlays/memberof.c
index 3a38b63373..88637b200f 100644
--- a/servers/slapd/overlays/memberof.c
+++ b/servers/slapd/overlays/memberof.c
@@ -580,6 +580,7 @@ memberof_op_add( Operation *op, SlapReply *rs )
 							sizeof( struct berval ) * ( j - i ) );
 					}
 					i--;
+					a->a_numvals--;
 				}
 			}