diff --git a/interp/tools.py b/interp/tools.py
index 74c35d8..a811091 100644
--- a/interp/tools.py
+++ b/interp/tools.py
@@ -65,6 +65,7 @@ def improved_answer(answer, exact):
   else:
     log.debug(":( damaged result")
     return False
+
 def improved(qlin, err, final, exact):
   if np.abs(final - exact) <= np.abs(qlin - exact):
     return True