diff --git a/cc/gen_test.go b/cc/gen_test.go
index 41ef95c..40a5716 100644
--- a/cc/gen_test.go
+++ b/cc/gen_test.go
@@ -36,8 +36,10 @@
 		aidl := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_shared").Rule("aidl")
 		libfoo := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_shared").Module().(*Module)
 
-		if !inList("-I"+filepath.Dir(aidl.Output.String()), libfoo.flags.Local.CommonFlags) {
-			t.Errorf("missing aidl includes in global flags")
+		expected := "-I" + filepath.Dir(aidl.Output.String())
+		actual := android.StringsRelativeToTop(ctx.Config(), libfoo.flags.Local.CommonFlags)
+		if !inList(expected, actual) {
+			t.Errorf("missing aidl includes in global flags, expected %q, actual %q", expected, actual)
 		}
 	})
 
@@ -61,7 +63,7 @@
 		aidlManifest := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_shared").Output("aidl.sbox.textproto")
 		libfoo := ctx.ModuleForTests("libfoo", "android_arm_armv7-a-neon_shared").Module().(*Module)
 
-		if !inList("-I"+filepath.Dir(aidl.Output.String()), libfoo.flags.Local.CommonFlags) {
+		if !inList("-I"+filepath.Dir(aidl.Output.String()), android.StringsRelativeToTop(ctx.Config(), libfoo.flags.Local.CommonFlags)) {
 			t.Errorf("missing aidl includes in global flags")
 		}