diff --git a/test/test_ctselect.py b/test/test_ctselect.py
index 8f27ab2..125c83f 100755
--- a/test/test_ctselect.py
+++ b/test/test_ctselect.py
@@ -459,7 +459,7 @@ class Test(test):
         select.execute()
 
         # Check result file
-        self._check_result_file('ctselect_py_EventListExt.fits' nevents=595)
+        self._check_result_file('ctselect_py_EventListExt.fits', nevents=595)
 
         self._teardown(select)