diff --git a/apex/apex_test.go b/apex/apex_test.go
index 80decd087..84bb2b572 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -3379,6 +3379,7 @@ func TestLegacyAndroid10Support(t *testing.T) {
 	module := ctx.ModuleForTests("myapex", "android_common_myapex_image")
 	args := module.Rule("apexRule").Args
 	ensureContains(t, args["opt_flags"], "--manifest_json "+module.Output("apex_manifest.json").Output.String())
+	ensureNotContains(t, args["opt_flags"], "--no_hashtree")
 }
 
 func TestJavaSDKLibrary(t *testing.T) {
diff --git a/apex/builder.go b/apex/builder.go
index 7e48b77e3..912218864 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -397,7 +397,7 @@ func (a *apexBundle) buildUnflattenedApex(ctx android.ModuleContext) {
 			ctx.PropertyErrorf("test_only_no_hashtree", "not available")
 			return
 		}
-		if (!ctx.Config().UnbundledBuild() && a.installable()) || a.testOnlyShouldSkipHashtreeGeneration() {
+		if !proptools.Bool(a.properties.Legacy_android10_support) || a.testOnlyShouldSkipHashtreeGeneration() {
 			// Apexes which are supposed to be installed in builtin dirs(/system, etc)
 			// don't need hashtree for activation. Therefore, by removing hashtree from
 			// apex bundle (filesystem image in it, to be specific), we can save storage.