diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index 05915be..ca63020 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -66,6 +66,7 @@
 				exported_bootclasspath_fragments: [
 					"%s",
 				],
+				prefer: false,
 			}
 		`, apex, apexFile, fragment)),
 		android.FixtureAddFile(filepath.Join(dir, apexFile), nil),
@@ -226,8 +227,8 @@
 			checkBootJarsPackageCheckRule(t, result,
 				append(
 					[]string{
-						"out/soong/.intermediates/prebuilts/apex/com.android.art/android_common_com.android.art/deapexer/javalib/core1.jar",
-						"out/soong/.intermediates/prebuilts/apex/com.android.art/android_common_com.android.art/deapexer/javalib/core2.jar",
+						"out/soong/.intermediates/prebuilts/apex/com.android.art/android_common_prebuilt_com.android.art/deapexer/javalib/core1.jar",
+						"out/soong/.intermediates/prebuilts/apex/com.android.art/android_common_prebuilt_com.android.art/deapexer/javalib/core2.jar",
 						"out/soong/.intermediates/default/java/framework/android_common/aligned/framework.jar",
 					},
 					java.ApexBootJarDexJarPaths...,
diff --git a/sdk/testing.go b/sdk/testing.go
index f5518c4..cd7bbf5 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -281,7 +281,7 @@
 
 		// Run the snapshot with the snapshot preparer and the extra preparer, which must come after as
 		// it may need to modify parts of the MockFS populated by the snapshot preparer.
-		result := android.GroupFixturePreparers(snapshotPreparer, extraPreparer, customizedPreparers).
+		result := android.GroupFixturePreparers(snapshotPreparer, customizedPreparers, extraPreparer).
 			ExtendWithErrorHandler(customization.errorHandler).
 			RunTest(t)
 
@@ -314,6 +314,11 @@
 			snapshotBpFile := filepath.Join(snapshotSubDir, "Android.bp")
 			unpreferred := string(fs[snapshotBpFile])
 			fs[snapshotBpFile] = []byte(strings.ReplaceAll(unpreferred, "prefer: false,", "prefer: true,"))
+
+			prebuiltApexBpFile := "prebuilts/apex/Android.bp"
+			if prebuiltApexBp, ok := fs[prebuiltApexBpFile]; ok {
+				fs[prebuiltApexBpFile] = []byte(strings.ReplaceAll(string(prebuiltApexBp), "prefer: false,", "prefer: true,"))
+			}
 		})
 
 		runSnapshotTestWithCheckers(t, checkSnapshotPreferredWithSource, preferPrebuilts)