diff --git a/metakernel/magics/help_magic.py b/metakernel/magics/help_magic.py
index a747baf..053c66a 100644
--- a/metakernel/magics/help_magic.py
+++ b/metakernel/magics/help_magic.py
@@ -18,7 +18,7 @@ def help_strings(self):
         ]
         strings = []
         if self.kernel.help_suffix:
-            strings += [s.format(self.kernel.help_suffix['help'])
+            strings += [s.format(self.kernel.help_suffix)
                         for s in suffixes]
         if 'help' in self.kernel.magic_prefixes:
             strings += [p.format(self.kernel.magic_prefixes['help'])