diff --git a/parse.py b/parse.py
index 5abc82c..4d7dcff 100644
--- a/parse.py
+++ b/parse.py
@@ -49,7 +49,7 @@ class XMLProcessor:
             warnings.warn("Empty text")
             return 0.0
 
-        if text is not None and len(text) < 15 and self.contains_number(text):
+        if text is not None and len(text) < 20 and self.contains_number(text):
             warnings.warn("Text contains number")
             return 0.0