diff --git a/sdk/android/native_api/jni/scoped_java_ref.h b/sdk/android/native_api/jni/scoped_java_ref.h
index e37a992445..ac2c4f4c88 100644
--- a/sdk/android/native_api/jni/scoped_java_ref.h
+++ b/sdk/android/native_api/jni/scoped_java_ref.h
@@ -172,6 +172,7 @@ class ScopedJavaGlobalRef : public JavaRef<T> {
  public:
   using JavaRef<T>::obj_;
 
+  ScopedJavaGlobalRef() = default;
   explicit constexpr ScopedJavaGlobalRef(std::nullptr_t) {}
   ScopedJavaGlobalRef(JNIEnv* env, const JavaRef<T>& other)
       : JavaRef<T>(static_cast<T>(env->NewGlobalRef(other.obj()))) {}
@@ -185,6 +186,21 @@ class ScopedJavaGlobalRef : public JavaRef<T> {
       AttachCurrentThreadIfNeeded()->DeleteGlobalRef(obj_);
   }
 
+  void operator=(const JavaRef<T>& other) {
+    JNIEnv* env = AttachCurrentThreadIfNeeded();
+    if (obj_ != nullptr) {
+      env->DeleteGlobalRef(obj_);
+    }
+    obj_ = other.is_null() ? nullptr : env->NewGlobalRef(other.obj());
+  }
+
+  void operator=(std::nullptr_t) {
+    if (obj_ != nullptr) {
+      AttachCurrentThreadIfNeeded()->DeleteGlobalRef(obj_);
+    }
+    obj_ = nullptr;
+  }
+
   // Releases the reference to the caller. The caller *must* delete the
   // reference when it is done with it. Note that calling a Java method
   // is *not* a transfer of ownership and Release() should not be used.