diff --git a/indra/llmessage/aihttptimeout.cpp b/indra/llmessage/aihttptimeout.cpp
index 22dbb1cfd..bfb0f767b 100644
--- a/indra/llmessage/aihttptimeout.cpp
+++ b/indra/llmessage/aihttptimeout.cpp
@@ -157,7 +157,10 @@ void HTTPTimeout::upload_starting(void)
 //                                                                             |
 void HTTPTimeout::upload_finished(void)
 {
+  // Disable this assert when there isn't enough debug output to do anything with it.
+#if defined(CWDEBUG) || defined(DEBUG_CURLIO)
   llassert(!mUploadFinished);	// If we get here twice, then the 'upload finished' detection failed.
+#endif
   mUploadFinished = true;
   // Only accept a call to upload_starting() if being_redirected() is called after this point.
   mBeingRedirected = false;