diff --git a/cc/cc_test.go b/cc/cc_test.go
index e4dfc97..07dcc95 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -3921,8 +3921,9 @@
 	}),
 	android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
 		variables.MemtagHeapExcludePaths = []string{"subdir_exclude"}
-		variables.MemtagHeapSyncIncludePaths = []string{"subdir_sync"}
-		variables.MemtagHeapAsyncIncludePaths = []string{"subdir_async"}
+		// "subdir_exclude" is covered by both include and exclude paths. Exclude wins.
+		variables.MemtagHeapSyncIncludePaths = []string{"subdir_sync", "subdir_exclude"}
+		variables.MemtagHeapAsyncIncludePaths = []string{"subdir_async", "subdir_exclude"}
 	}),
 )