diff --git a/[refs] b/[refs]
index ded3d5beac96..7139ef1d134f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 47103277f8861dcb48ab845533db331ddb9427ca
+refs/heads/master: b00eca8cd66029128615e8be9a19e284a950c0f2
diff --git a/trunk/tools/perf/builtin-kmem.c b/trunk/tools/perf/builtin-kmem.c
index 33bb9dfb8e68..93c67bf53d2c 100644
--- a/trunk/tools/perf/builtin-kmem.c
+++ b/trunk/tools/perf/builtin-kmem.c
@@ -784,7 +784,8 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __used)
 			setup_sorting(&alloc_sort, default_sort_order);
 
 		return __cmd_kmem();
-	}
+	} else
+		usage_with_options(kmem_usage, kmem_options);
 
 	return 0;
 }