diff --git a/docs/changelog.md b/docs/changelog.md
index 29aab36d..a4e269ba 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -56,3 +56,4 @@
 
 ## master
 - bugfix: make non-default args non-null in UDFs
+- bugfix: default value of a string type argument in a UDF was wrapped in single quotes