diff --git a/ChangeLog b/ChangeLog
index 96d9b7714394eb4da51a4d03bc9185585e26cc6f..f671df94495dfe7256fb88ecb38044ac5c9d4875 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2021-09-15  Oliver Lemke  <olemke@core-dump.info>
+
+	* ARTS-XML-DATA-2-5-9
+
+	* planets/Earth/ECMWF/IFS/Eresmaa_137L/ConvertCompactAtm_ArrayOfMatrix-to-ArrayOfGriddedField4.arts:
+
+	Replace StringCompose with StringJoin.
+
 2021-07-06 Richard Larsson <ric.larsson@gmail.com>
 
 	* ARTS-XML-DATA-2-5-8
diff --git a/planets/Earth/ECMWF/IFS/Eresmaa_137L/ConvertCompactAtm_ArrayOfMatrix-to-ArrayOfGriddedField4.arts b/planets/Earth/ECMWF/IFS/Eresmaa_137L/ConvertCompactAtm_ArrayOfMatrix-to-ArrayOfGriddedField4.arts
index a4468e3081553330c975d696ee040d165e00961b..695675340b0ad75852c9cff93e31fd1f24c4b7bb 100644
--- a/planets/Earth/ECMWF/IFS/Eresmaa_137L/ConvertCompactAtm_ArrayOfMatrix-to-ArrayOfGriddedField4.arts
+++ b/planets/Earth/ECMWF/IFS/Eresmaa_137L/ConvertCompactAtm_ArrayOfMatrix-to-ArrayOfGriddedField4.arts
@@ -66,7 +66,7 @@ Arts2 {
       Append( filename_output, fileloc )
       
       # the temporary files of the fortran program are named 'FILENAME.xml.temp'
-      StringCompose( filename_input, filename_output, ".temp" )
+      StringJoin( filename_input, filename_output, ".temp" )
 
       # Read ArrayOfMatrix batch data
       #------------------------------
@@ -94,7 +94,7 @@ Arts2 {
       Append( filename_output, fileloc )
       
       # the temporary files of the fortran program are named 'FILENAME.xml.temp'
-      StringCompose( filename_input, filename_output, ".temp" )
+      StringJoin( filename_input, filename_output, ".temp" )
 
       # Read ArrayOfMatrix batch data
       #------------------------------