diff --git a/SignalServiceKit/src/Messages/OWSMessageSender.m b/SignalServiceKit/src/Messages/OWSMessageSender.m
index 1d71c6139..530e7a8af 100644
--- a/SignalServiceKit/src/Messages/OWSMessageSender.m
+++ b/SignalServiceKit/src/Messages/OWSMessageSender.m
@@ -606,6 +606,7 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
                 attempts:OWSMessageSenderRetryAttempts
                 useWebsocketIfAvailable:YES
                 success:^{
+                    // The value doesn't matter, we just need any non-NSError value.
                     resolve(@(1));
                 }
                 failure:^(NSError *error) {