diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index b2fc968..a4d0f20 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -295,4 +295,10 @@
 
 endfunc
 
+function Test_helpgrep()
+  helpgrep quickfix
+  copen
+  " This wipes out the buffer, make sure that doesn't cause trouble.
+  cclose
+endfunc