diff --git a/tests/test-help b/tests/test-help
--- a/tests/test-help
+++ b/tests/test-help
@@ -51,4 +51,7 @@ hg help nohelp
 echo %% test that default list of commands omits extension commands
 hg help
 
+echo %% test list of commands with command with no help text
+hg help helpext
+
 exit 0
diff --git a/tests/test-help.out b/tests/test-help.out
--- a/tests/test-help.out
+++ b/tests/test-help.out
@@ -542,3 +542,11 @@ additional help topics:
  extensions   Using additional features
 
 use "hg -v help" to show aliases and global options
+%% test list of commands with command with no help text
+helpext extension - no help text available
+
+list of commands:
+
+ nohelp   (no help text available)
+
+use "hg -v help helpext" to show aliases and global options