diff --git a/aider/main.py b/aider/main.py
index 51c398e5c..b42b84299 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -569,7 +569,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
         io.tool_warning("Terminal does not support pretty output (UnicodeDecodeError)")
 
     if args.stream and args.cache_prompts:
-        io.tool_warning("Caching costs may be inaccurate when streaming.")
+        io.tool_warning("Cost estimates may be inaccurate when using streaming and caching.")
 
     # Process any environment variables set via --set-env
     if args.set_env: