diff --git a/zen.txt b/zen.txt
index db89a1b..d532585 100644
--- a/zen.txt
+++ b/zen.txt
@@ -2,5 +2,6 @@ Beautiful is better than ugly.
 Readability counts.
 Simple is better than complexe.
 Complex is better than complicated.
+In the face of ambiguity, refuse the temptation to guess.
 
 The Zen of Python, by Tim Peters