diff --git a/CHANGELOG.md b/CHANGELOG.md
index 367c1bf5de497bf708c1273799db6da1ef2a2952..e0ec0b6b630e0310ceb81b955ceed7f0089a0e6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -67,6 +67,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * #40 Insertion of identifiables with missing obligatory properties
 - Before, a Property with the datatype "LIST(TEXT)" would lead to the creation 
   of a RecordType. This is fixed now.
+* #52 `XLSimporter.read_xls` throwed a wrong error when reading from a file with a wrong ending. 
+  Now, a `DataInconsistencyError` is raised instead of a ValueError.
 
 ### Security ###