diff --git a/test/hotspot/jtreg/sources/TestIncludesAreSorted.java b/test/hotspot/jtreg/sources/TestIncludesAreSorted.java
index e0e77992ace71..f8694da6c5ac6 100644
--- a/test/hotspot/jtreg/sources/TestIncludesAreSorted.java
+++ b/test/hotspot/jtreg/sources/TestIncludesAreSorted.java
@@ -24,6 +24,8 @@
 /*
  * @test
  * @bug 8343802
+ * @comment Only need to run this once, in tier1.
+ * @requires vm.flagless & vm.debug
  * @summary Tests that HotSpot C++ files have sorted includes
  * @build SortIncludes
  * @run main TestIncludesAreSorted
diff --git a/test/hotspot/jtreg/sources/TestNoNULL.java b/test/hotspot/jtreg/sources/TestNoNULL.java
index 9c993572aeaba..b914ea6c799aa 100644
--- a/test/hotspot/jtreg/sources/TestNoNULL.java
+++ b/test/hotspot/jtreg/sources/TestNoNULL.java
@@ -24,6 +24,8 @@
 /*
  * @test
  * @bug 8343802
+ * @comment Only need to run this once, in tier1.
+ * @requires vm.flagless & vm.debug
  * @summary Test prevent NULL backsliding in hotspot code and tests
  * @run main TestNoNULL
  */