diff --git a/FirebaseRemoteConfig/Sources/Private/RCNConfigFetch.h b/FirebaseRemoteConfig/Sources/Private/RCNConfigFetch.h
index cbe202ec6a8..b04ed7446d7 100644
--- a/FirebaseRemoteConfig/Sources/Private/RCNConfigFetch.h
+++ b/FirebaseRemoteConfig/Sources/Private/RCNConfigFetch.h
@@ -27,11 +27,6 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-/// Completion handler invoked after a fetch that contains the updated keys
-typedef void (^RCNConfigFetchCompletion)(FIRRemoteConfigFetchStatus status,
-                                         FIRRemoteConfigUpdate *update,
-                                         NSError *error);
-
 @interface RCNConfigFetch : NSObject
 
 - (instancetype)init NS_UNAVAILABLE;
@@ -58,7 +53,9 @@ typedef void (^RCNConfigFetchCompletion)(FIRRemoteConfigFetchStatus status,
 /// @param fetchAttemptNumber The number of the fetch attempt.
 /// @param completionHandler   Callback handler.
 - (void)realtimeFetchConfigWithNoExpirationDuration:(NSInteger)fetchAttemptNumber
-                                  completionHandler:(RCNConfigFetchCompletion)completionHandler;
+                                  completionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                                              FIRRemoteConfigUpdate *update,
+                                                              NSError *error))completionHandler;
 
 /// Add the ability to update NSURLSession's timeout after a session has already been created.
 - (void)recreateNetworkSession;
diff --git a/FirebaseRemoteConfig/Sources/RCNConfigFetch.m b/FirebaseRemoteConfig/Sources/RCNConfigFetch.m
index 89da1c7bb41..47b100703c8 100644
--- a/FirebaseRemoteConfig/Sources/RCNConfigFetch.m
+++ b/FirebaseRemoteConfig/Sources/RCNConfigFetch.m
@@ -199,7 +199,9 @@ - (void)fetchConfigWithExpirationDuration:(NSTimeInterval)expirationDuration
 #pragma mark - Fetch helpers
 
 - (void)realtimeFetchConfigWithNoExpirationDuration:(NSInteger)fetchAttemptNumber
-                                  completionHandler:(RCNConfigFetchCompletion)completionHandler {
+                                  completionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                                              FIRRemoteConfigUpdate *update,
+                                                              NSError *error))completionHandler {
   // Note: We expect the googleAppID to always be available.
   BOOL hasDeviceContextChanged = [Device remoteConfigHasDeviceContextChanged:_settings.deviceContext
                                                            projectIdentifier:_options.googleAppID];
@@ -246,7 +248,9 @@ - (NSString *)FIRAppNameFromFullyQualifiedNamespace {
 /// requests to work.(b/14751422).
 - (void)refreshInstallationsTokenWithFetchHeader:(NSString *)fetchTypeHeader
                                completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-                         updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler {
+                         updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                                           FIRRemoteConfigUpdate *update,
+                                                           NSError *error))updateCompletionHandler {
   FIRInstallations *installations = [FIRInstallations
       installationsWithApp:[FIRApp appNamed:[self FIRAppNameFromFullyQualifiedNamespace]]];
   if (!installations || !_options.GCMSenderID) {
@@ -344,7 +348,9 @@ - (void)refreshInstallationsTokenWithFetchHeader:(NSString *)fetchTypeHeader
 
 - (void)doFetchCall:(NSString *)fetchTypeHeader
           completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-    updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler {
+    updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                      FIRRemoteConfigUpdate *update,
+                                      NSError *error))updateCompletionHandler {
   [self getAnalyticsUserPropertiesWithCompletionHandler:^(NSDictionary *userProperties) {
     dispatch_async(self->_lockQueue, ^{
       [self fetchWithUserProperties:userProperties
@@ -380,7 +386,9 @@ - (void)reportCompletionWithStatus:(FIRRemoteConfigFetchStatus)status
                         withUpdate:(FIRRemoteConfigUpdate *)update
                          withError:(NSError *)error
                  completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-           updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler {
+           updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                             FIRRemoteConfigUpdate *update,
+                                             NSError *error))updateCompletionHandler {
   if (completionHandler) {
     dispatch_async(dispatch_get_main_queue(), ^{
       completionHandler(status, error);
@@ -397,7 +405,9 @@ - (void)reportCompletionWithStatus:(FIRRemoteConfigFetchStatus)status
 - (void)fetchWithUserProperties:(NSDictionary *)userProperties
                 fetchTypeHeader:(NSString *)fetchTypeHeader
               completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-        updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler {
+        updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                          FIRRemoteConfigUpdate *update,
+                                          NSError *error))updateCompletionHandler {
   FIRLogDebug(kFIRLoggerRemoteConfig, @"I-RCN000061", @"Fetch with user properties initiated.");
 
   NSString *postRequestString = [_settings nextRequestWithUserProperties:userProperties];
diff --git a/FirebaseRemoteConfig/Tests/Swift/ObjC/FetchMocks.m b/FirebaseRemoteConfig/Tests/Swift/ObjC/FetchMocks.m
index 30300a61e3a..7ef90f374fa 100644
--- a/FirebaseRemoteConfig/Tests/Swift/ObjC/FetchMocks.m
+++ b/FirebaseRemoteConfig/Tests/Swift/ObjC/FetchMocks.m
@@ -20,10 +20,14 @@
 @interface RCNConfigFetch (ExposedForTest)
 - (void)refreshInstallationsTokenWithFetchHeader:(NSString *)fetchTypeHeader
                                completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-                         updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler;
+                         updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                                           FIRRemoteConfigUpdate *update,
+                                                           NSError *error))updateCompletionHandler;
 - (void)doFetchCall:(NSString *)fetchTypeHeader
           completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-    updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler;
+    updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                      FIRRemoteConfigUpdate *update,
+                                      NSError *error))updateCompletionHandler;
 @end
 
 @implementation FetchMocks
diff --git a/FirebaseRemoteConfig/Tests/Unit/RCNPersonalizationTest.m b/FirebaseRemoteConfig/Tests/Unit/RCNPersonalizationTest.m
index 5ecbe418647..dc642d9e0d6 100644
--- a/FirebaseRemoteConfig/Tests/Unit/RCNPersonalizationTest.m
+++ b/FirebaseRemoteConfig/Tests/Unit/RCNPersonalizationTest.m
@@ -39,7 +39,9 @@ - (NSURLSessionDataTask *)URLSessionDataTaskWithContent:(NSData *)content
 - (void)fetchWithUserProperties:(NSDictionary *)userProperties
                 fetchTypeHeader:(NSString *)fetchTypeHeader
               completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-        updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler;
+        updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                          FIRRemoteConfigUpdate *update,
+                                          NSError *error))updateCompletionHandler;
 @end
 
 @interface RCNPersonalizationTest : XCTestCase {
diff --git a/FirebaseRemoteConfig/Tests/Unit/RCNRemoteConfigTest.m b/FirebaseRemoteConfig/Tests/Unit/RCNRemoteConfigTest.m
index 21949b58215..762297e2b0e 100644
--- a/FirebaseRemoteConfig/Tests/Unit/RCNRemoteConfigTest.m
+++ b/FirebaseRemoteConfig/Tests/Unit/RCNRemoteConfigTest.m
@@ -55,11 +55,15 @@ - (NSURLSessionDataTask *)URLSessionDataTaskWithContent:(NSData *)content
 - (void)fetchConfigWithExpirationDuration:(NSTimeInterval)expirationDuration
                         completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler;
 - (void)realtimeFetchConfigWithNoExpirationDuration:(NSInteger)fetchAttemptNumber
-                                  completionHandler:(RCNConfigFetchCompletion)completionHandler;
+                                  completionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                                              FIRRemoteConfigUpdate *update,
+                                                              NSError *error))completionHandler;
 - (void)fetchWithUserProperties:(NSDictionary *)userProperties
                 fetchTypeHeader:(NSString *)fetchTypeHeader
               completionHandler:(FIRRemoteConfigFetchCompletion)completionHandler
-        updateCompletionHandler:(RCNConfigFetchCompletion)updateCompletionHandler;
+        updateCompletionHandler:(void (^)(FIRRemoteConfigFetchStatus status,
+                                          FIRRemoteConfigUpdate *update,
+                                          NSError *error))updateCompletionHandler;
 - (NSString *)constructServerURL;
 - (NSURLSession *)currentNetworkSession;
 @end