diff --git a/doc/_timezones.rdoc b/doc/_timezones.rdoc
index e355d699b4..a2ac46584f 100644
--- a/doc/_timezones.rdoc
+++ b/doc/_timezones.rdoc
@@ -78,6 +78,7 @@ The timezone methods are:
 
   The UTC offset will be calculated as the difference between the
   original time and the returned object as an +Integer+.
+  If the object is in fixed offset, its +utc_offset+ is also counted.
 
   Argument:: a {Time-like object}[rdoc-ref:Time@Time-Like+Objects].
   Returns:: a {Time-like object}[rdoc-ref:Time@Time-Like+Objects] in the local timezone.