diff --git a/dexpreopt/testing.go b/dexpreopt/testing.go
index 47ae494..b3dd3cc 100644
--- a/dexpreopt/testing.go
+++ b/dexpreopt/testing.go
@@ -174,3 +174,10 @@
 		dexpreoptConfig.DisableGenerateProfile = disable
 	})
 }
+
+// FixtureDisableDexpreoptBootImages sets the DisablePreoptBootImages property in the global config.
+func FixtureDisableDexpreoptBootImages(disable bool) android.FixturePreparer {
+	return FixtureModifyGlobalConfig(func(_ android.PathContext, dexpreoptConfig *GlobalConfig) {
+		dexpreoptConfig.DisablePreoptBootImages = disable
+	})
+}