diff --git a/server/core/dcb.c b/server/core/dcb.c
index c8051e811..0497fb114 100644
--- a/server/core/dcb.c
+++ b/server/core/dcb.c
@@ -109,6 +109,7 @@ DCB	*rval;
 #endif
         rval->dcb_role = role;
 #if 1
+	//let's call simple_mutex_done in dcb_final_free
         simple_mutex_init(&rval->dcb_write_lock, "DCB write mutex");
         simple_mutex_init(&rval->dcb_read_lock, "DCB read mutex");
         rval->dcb_write_active = false;
@@ -302,6 +303,12 @@ dcb_final_free(DCB *dcb)
 	if (dcb->remote)
 		free(dcb->remote);
 	bitmask_free(&dcb->memdata.bitmask);
+
+#if 1
+	simple_mutex_done(&dcb->dcb_read_lock);
+	simple_mutex_done(&dcb->dcb_write_lock);
+#endif
+
 	free(dcb);
 }