diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index 2ed7eb7..2cc5716 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -315,7 +315,7 @@
 
   call assert_fails('call strptime()', 'E119:')
   call assert_fails('call strptime("xxx")', 'E119:')
-  " This fails on BSD 14 and returns 
+  " This fails on BSD 14 and returns
   " -2209078800 instead of 0
   call assert_equal(0, strptime("%Y", ''))
   call assert_equal(0, strptime("%Y", "xxx"))