diff --git a/lib/core/option.py b/lib/core/option.py
index 10366bb43..021173519 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -1019,7 +1019,7 @@ def __setHTTPExtraHeaders():
         conf.httpHeaders.append(("Accept-Language", "en-us,en;q=0.5"))
         conf.httpHeaders.append(("Accept-Charset", "ISO-8859-15,utf-8;q=0.7,*;q=0.7"))
 
-        # Invalidating any proxy mechanism
+        # Invalidating any caching mechanism in between
         # Reference: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
         conf.httpHeaders.append(("Cache-Control", "no-cache,no-store"))
         conf.httpHeaders.append(("Pragma", "no-cache"))