diff --git a/mercurial/help.py b/mercurial/help.py
--- a/mercurial/help.py
+++ b/mercurial/help.py
@@ -449,8 +449,8 @@ def help_(ui, name, unknowncmd=False, fu
             modcmds = set([c.split('|', 1)[0] for c in ct])
             rst.extend(helplist(modcmds.__contains__))
         else:
-            rst.append(_('use "hg help extensions" for information on enabling '
-                       'extensions\n'))
+            rst.append(_('(use "hg help extensions" for information on enabling'
+                       ' extensions)\n'))
         return rst
 
     def helpextcmd(name):
@@ -461,8 +461,8 @@ def help_(ui, name, unknowncmd=False, fu
         rst = listexts(_("'%s' is provided by the following "
                               "extension:") % cmd, {ext: doc}, indent=4)
         rst.append('\n')
-        rst.append(_('use "hg help extensions" for information on enabling '
-                   'extensions\n'))
+        rst.append(_('(use "hg help extensions" for information on enabling '
+                   'extensions)\n'))
         return rst
 
 
diff --git a/tests/test-extension.t b/tests/test-extension.t
--- a/tests/test-extension.t
+++ b/tests/test-extension.t
@@ -588,7 +588,7 @@ Disabled extension commands:
   
       patchbomb     command to send changesets as (a series of) patch emails
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
 
   $ hg qdel
@@ -597,7 +597,7 @@ Disabled extension commands:
   
       mq            manage a stack of patches
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
   [255]
 
 
@@ -607,7 +607,7 @@ Disabled extension commands:
   
       churn         command to display statistics about repository history
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
   [255]
 
 
@@ -617,12 +617,12 @@ Disabled extensions:
   $ hg help churn
   churn extension - command to display statistics about repository history
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
   $ hg help patchbomb
   patchbomb extension - command to send changesets as (a series of) patch emails
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
 
 Broken disabled extension and command:
@@ -642,7 +642,7 @@ Broken disabled extension and command:
   $ hg --config extensions.path=./path.py help broken
   broken extension - (no help text available)
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
 
   $ cat > hgext/forest.py <<EOF
diff --git a/tests/test-qrecord.t b/tests/test-qrecord.t
--- a/tests/test-qrecord.t
+++ b/tests/test-qrecord.t
@@ -9,7 +9,7 @@ help record (no record)
   record extension - commands to interactively select changes for
   commit/qrefresh
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
 help qrecord (no record)
 
@@ -18,7 +18,7 @@ help qrecord (no record)
   
       record        commands to interactively select changes for commit/qrefresh
   
-  use "hg help extensions" for information on enabling extensions
+  (use "hg help extensions" for information on enabling extensions)
 
   $ echo "[extensions]"     >> $HGRCPATH
   $ echo "record="          >> $HGRCPATH