diff --git a/cernopendata/modules/fixtures/data/records/cms-masterclass-files.json b/cernopendata/modules/fixtures/data/records/cms-masterclass-files.json
index 47f1ad512c..21423ab4d6 100644
--- a/cernopendata/modules/fixtures/data/records/cms-masterclass-files.json
+++ b/cernopendata/modules/fixtures/data/records/cms-masterclass-files.json
@@ -541,7 +541,7 @@
   },
   {
     "abstract": {
-      "description": "<p>The CMS collaboration has approved the release of 100k dimuon events in the invariant mass range 2-110 GeV for use in outreach and education. This document contains the files for this release.</p> <p>These data were selected for use in education and outreach and contain a subset of the total event information. The selection criteria may be different from that used in CMS physics results. They are not suitable for a full physics analysis.</p>"
+      "description": "<p>The CMS collaboration has approved the release of 100k dimuon events in the invariant mass range 2-110 GeV for use in outreach and education. This document contains the files for this release.</p> <p>These data were selected for use in education and outreach and contain a subset of the total event information. The selection criteria may be different from that used in CMS physics results. They are not suitable for a full physics analysis.</p><p><em>Updated on July 6th 2022. An empty space has been removed from the column name px1 in the csv dataset dimuon.csv.</em></p>"
     },
     "accelerator": "CERN-LHC",
     "authors": [
@@ -712,7 +712,7 @@
   },
   {
     "abstract": {
-      "description": "<p>The CMS collaboration has approved the release of 100k dielectron events in the invariant mass range 2-110 GeV for use in outreach and education. This document contains the files for this release.</p> <p>These data were selected for use in education and outreach and contain a subset of the total event information. The selection criteria may be different from that used in CMS physics results. They are not suitable for a full physics analysis.</p>"
+      "description": "<p>The CMS collaboration has approved the release of 100k dielectron events in the invariant mass range 2-110 GeV for use in outreach and education. This document contains the files for this release.</p> <p>These data were selected for use in education and outreach and contain a subset of the total event information. The selection criteria may be different from that used in CMS physics results. They are not suitable for a full physics analysis.</p><p><em>Updated on July 6th 2022. An empty space has been removed from the column name px1 in the csv dataset dielectron.csv.</em></p>"
     },
     "accelerator": "CERN-LHC",
     "authors": [