diff --git a/source/blender/editors/armature/pose_select.c b/source/blender/editors/armature/pose_select.c
index 9087a8879d6..9207a55b380 100644
--- a/source/blender/editors/armature/pose_select.c
+++ b/source/blender/editors/armature/pose_select.c
@@ -480,6 +480,9 @@ static int pose_select_parent_exec(bContext *C, wmOperator *UNUSED(op))
 		/* mask modifier ('armature' mode), etc. */
 		DEG_id_tag_update(&ob->id, OB_RECALC_DATA);
 	}
+
+	/* tag armature for copy-on-write update (since act_bone is in armature not object) */
+	DEG_id_tag_update(&arm->id, DEG_TAG_COPY_ON_WRITE);
 	
 	return OPERATOR_FINISHED;
 }
@@ -643,7 +646,10 @@ static int pose_select_hierarchy_exec(bContext *C, wmOperator *op)
 		/* mask modifier ('armature' mode), etc. */
 		DEG_id_tag_update(&ob->id, OB_RECALC_DATA);
 	}
-	
+
+	/* tag armature for copy-on-write update (since act_bone is in armature not object) */
+	DEG_id_tag_update(&arm->id, DEG_TAG_COPY_ON_WRITE);
+
 	return OPERATOR_FINISHED;
 }