diff --git a/pulsar/core.py b/pulsar/core.py
index f3e497aac3e94a39f887ac54a4e2bf4a89adbdf1..ea03e9defa5a8cee0b589a561e08cd273abb6eaf 100644
--- a/pulsar/core.py
+++ b/pulsar/core.py
@@ -83,7 +83,7 @@ class PulsarApp(object):
         """
         tool_config_files = conf.get("tool_config_files", None)
         if not tool_config_files:
-            # For compatibity with Galaxy, allow tool_config_file
+            # For compatibility with Galaxy, allow tool_config_file
             # option name.
             tool_config_files = conf.get("tool_config_file", None)
         toolbox = None