diff --git a/services/core/java/com/android/server/ambientcontext/AmbientContextManagerService.java b/services/core/java/com/android/server/ambientcontext/AmbientContextManagerService.java
index a9a77bf28ebec..c6b15b6dcd7aa 100644
--- a/services/core/java/com/android/server/ambientcontext/AmbientContextManagerService.java
+++ b/services/core/java/com/android/server/ambientcontext/AmbientContextManagerService.java
@@ -60,6 +60,7 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * System service for managing {@link AmbientContextEvent}s.
@@ -595,7 +596,7 @@ public class AmbientContextManagerService extends
 
             synchronized (mLock) {
                 for (ClientRequest cr : mExistingClientRequests) {
-                    if (cr.getPackageName().equals(callingPackage)) {
+                    if ((cr != null) && cr.getPackageName().equals(callingPackage)) {
                         AmbientContextManagerPerUserService service =
                                 getAmbientContextManagerPerUserServiceForEventTypes(
                                         UserHandle.getCallingUserId(),