diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f7745af..39a1cce0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html)
 
+## [0.4.9] 2023-11-17
+
+### Fixed
+
+- Error management in expression files
+
 ## [0.4.8] 2023-10-20
 
 ### Added
diff --git a/imports/api/transcriptomes/addExpression.js b/imports/api/transcriptomes/addExpression.js
index d345b07f..f4756482 100644
--- a/imports/api/transcriptomes/addExpression.js
+++ b/imports/api/transcriptomes/addExpression.js
@@ -123,7 +123,7 @@ const parseExpressionTsv = ({
         const gene = Genes.findOne(geneQuery);
 
         if (typeof gene === 'undefined') {
-          logger.warn(`${target_id} not found`);
+          logger.warn(`${row[firstColumn]} not found`);
         } else {
           nInserted += 1;
           replicaGroups.forEach((replicaGroup) => {
diff --git a/package.json b/package.json
index 35103876..ddeab903 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "genoboo",
-  "version": "0.4.8",
+  "version": "0.4.9",
   "repository": "https://github.com/gogepp/genoboo",
   "description": "A portable website for browsing and querying genome sequences and annotations. Forked from genenotebook",
   "license": "AGPL-3.0",
diff --git a/private/data/Bnigra_abundance.tsv b/private/data/Bnigra_abundance.tsv
index 07761e95..ab890f2c 100644
--- a/private/data/Bnigra_abundance.tsv
+++ b/private/data/Bnigra_abundance.tsv
@@ -1,2 +1,3 @@
 gene	sample1	sample2	sample3	sample4
 Bni%7CB01g000010.2N	40	60	80	90
+blabla	1	2	3	4