diff --git a/CHANGELOG.md b/CHANGELOG.md
index 845fccd5..447a2f51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -57,6 +57,7 @@ Users may have to change how they access the system
 
 ### Corrected Bugs
 
+* Fixed: [clixon_netconf errors on client XML Declaration with valid encoding spec](https://github.com/clicon/clixon/issues/250)
 * Fixed: Yang patterns: \n and other non-printable characters were broken
   * Example: Clixon interpereted them two characters: `\\ n` instead of ascii 10
 * Fixed: The auto-cli identityref did not expand identities in grouping/usecases properly.
diff --git a/test/test_xml.sh b/test/test_xml.sh
index 2d6f57d6..65d76646 100755
--- a/test/test_xml.sh
+++ b/test/test_xml.sh
@@ -127,6 +127,10 @@ expecteof "$clixon_util_xml -ol o" 255 '<?xml verion="1.0"?><a/>' '' 2> /dev/nul
 new "XMLdecl version + encoding"
 expecteof "$clixon_util_xml -o" 0 '<?xml version="1.0" encoding="UTF-8"?><a/>' '<a/>'
 
+# XML processors SHOULD match character encoding names in a case-insensitive way 
+new "XMLdecl encoding case-insensitive"
+expecteof "$clixon_util_xml -o" 0 '<?xml version="1.0" encoding="utf-8"?><a/>' '<a/>'
+
 new "XMLdecl version + wrong encoding"
 expecteof "$clixon_util_xml -o" 255 '<?xml version="1.0" encoding="UTF-16"?><a/>' '' 2> /dev/null