diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 41170a4c27497..56ec8eae23b67 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -1041,17 +1041,16 @@ public final class ActivityThread extends ClientTransactionHandler {
                 IUiAutomationConnection instrumentationUiConnection, int debugMode,
                 boolean enableBinderTracking, boolean trackAllocation,
                 boolean isRestrictedBackupMode, boolean persistent, Configuration config,
-                CompatibilityInfo compatInfo, Map services, Bundle coreSettings,
+                CompatibilityInfo compatInfo, Map<String, IBinder> services, Bundle coreSettings,
                 String buildSerial, AutofillOptions autofillOptions,
                 ContentCaptureOptions contentCaptureOptions, long[] disabledCompatChanges) {
             if (services != null) {
                 if (false) {
                     // Test code to make sure the app could see the passed-in services.
-                    for (Object oname : services.keySet()) {
-                        if (services.get(oname) == null) {
+                    for (String name : services.keySet()) {
+                        if (services.get(name) == null) {
                             continue; // AM just passed in a null service.
                         }
-                        String name = (String) oname;
 
                         // See b/79378449 about the following exemption.
                         switch (name) {
diff --git a/core/java/android/app/IApplicationThread.aidl b/core/java/android/app/IApplicationThread.aidl
index 6e9157e2a8c32..45a83884c6b15 100644
--- a/core/java/android/app/IApplicationThread.aidl
+++ b/core/java/android/app/IApplicationThread.aidl
@@ -72,7 +72,7 @@ oneway interface IApplicationThread {
             IInstrumentationWatcher testWatcher, IUiAutomationConnection uiAutomationConnection,
             int debugMode, boolean enableBinderTracking, boolean trackAllocation,
             boolean restrictedBackupMode, boolean persistent, in Configuration config,
-            in CompatibilityInfo compatInfo, in Map services,
+            in CompatibilityInfo compatInfo, in Map<String, IBinder> services,
             in Bundle coreSettings, in String buildSerial, in AutofillOptions autofillOptions,
             in ContentCaptureOptions contentCaptureOptions, in long[] disabledCompatChanges);
     void runIsolatedEntryPoint(in String entryPoint, in String[] entryPointArgs);