diff --git a/packages/CredentialManager/src/com/android/credentialmanager/CredentialManagerRepo.kt b/packages/CredentialManager/src/com/android/credentialmanager/CredentialManagerRepo.kt
index 23953a7974bd3..e3ed3d9255669 100644
--- a/packages/CredentialManager/src/com/android/credentialmanager/CredentialManagerRepo.kt
+++ b/packages/CredentialManager/src/com/android/credentialmanager/CredentialManagerRepo.kt
@@ -59,7 +59,7 @@ class CredentialManagerRepo(
 ) {
   val requestInfo: RequestInfo
   private val providerEnabledList: List<ProviderData>
-  private val providerDisabledList: List<DisabledProviderData>
+  private val providerDisabledList: List<DisabledProviderData>?
   // TODO: require non-null.
   val resultReceiver: ResultReceiver?
 
@@ -143,7 +143,7 @@ class CredentialManagerRepo(
       providerEnabledList as List<CreateCredentialProviderData>, requestDisplayInfo, context)
     val providerDisabledList = CreateFlowUtils.toDisabledProviderList(
       // Handle runtime cast error
-      providerDisabledList as List<DisabledProviderData>, context)
+      providerDisabledList, context)
     var defaultProvider: EnabledProviderInfo? = null
     var remoteEntry: RemoteInfo? = null
     providerEnabledList.forEach{providerInfo -> providerInfo.createOptions =
@@ -209,7 +209,7 @@ class CredentialManagerRepo(
     )
   }
 
-  private fun testDisabledProviderList(): List<DisabledProviderData> {
+  private fun testDisabledProviderList(): List<DisabledProviderData>? {
     return listOf(
       DisabledProviderData("com.lastpass.lpandroid"),
       DisabledProviderData("com.google.android.youtube")
diff --git a/packages/CredentialManager/src/com/android/credentialmanager/DataConverter.kt b/packages/CredentialManager/src/com/android/credentialmanager/DataConverter.kt
index b96f686c02fb9..357c55dc27701 100644
--- a/packages/CredentialManager/src/com/android/credentialmanager/DataConverter.kt
+++ b/packages/CredentialManager/src/com/android/credentialmanager/DataConverter.kt
@@ -209,12 +209,12 @@ class CreateFlowUtils {
     }
 
     fun toDisabledProviderList(
-      providerDataList: List<DisabledProviderData>,
+      providerDataList: List<DisabledProviderData>?,
       context: Context,
-    ): List<com.android.credentialmanager.createflow.DisabledProviderInfo> {
+    ): List<com.android.credentialmanager.createflow.DisabledProviderInfo>? {
       // TODO: get from the actual service info
       val packageManager = context.packageManager
-      return providerDataList.map {
+      return providerDataList?.map {
         val pkgInfo = packageManager
           .getPackageInfo(it.providerFlattenedComponentName,
             PackageManager.PackageInfoFlags.of(0))