diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index cd37513c7fd0e294b0593cf5eb49118d1d1f4372..9a213cf1ff92469112557293e49f0b37207bdfc0 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -719,7 +719,7 @@ const char *kCFStreamVarName = "grpc_cfstream";
                                      completionHandler:^{
                                        __strong GRPCCall *strongSelf = weakSelf;
                                        if (strongSelf) {
-                                         @synchronized (strongSelf) {
+                                         @synchronized(strongSelf) {
                                            strongSelf->_pendingCoreRead = NO;
                                            [strongSelf maybeStartNextRead];
                                          }