diff --git a/services/core/java/com/android/server/biometrics/BiometricServiceBase.java b/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
index 808f8c21cc8de..5a6ab4e594245 100644
--- a/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
+++ b/services/core/java/com/android/server/biometrics/BiometricServiceBase.java
@@ -978,6 +978,10 @@ public abstract class BiometricServiceBase extends SystemService
     }
 
     protected void addLockoutResetCallback(IBiometricServiceLockoutResetCallback callback) {
+        if (callback == null) {
+            Slog.w(getTag(), "Null LockoutResetCallback");
+            return;
+        }
         mHandler.post(() -> {
            final LockoutResetMonitor monitor = new LockoutResetMonitor(callback);
            if (!mLockoutMonitors.contains(monitor)) {