diff --git a/tests/grib2_chemicals_aerosols.sh b/tests/grib2_chemicals_aerosols.sh
index c77d1c12b..36e4265de 100755
--- a/tests/grib2_chemicals_aerosols.sh
+++ b/tests/grib2_chemicals_aerosols.sh
@@ -11,8 +11,9 @@
 . ./include.sh
 set -u
 
-label="grib_ecc-1224-test"
+label="grib2_chemicals_aerosols_test"
 temp=temp.$label
+temp1=temp.$label.1
 sample2=$ECCODES_SAMPLES_PATH/GRIB2.tmpl
 
 latest=`${tools_dir}/grib_get -p tablesVersionLatest $sample2`
@@ -101,10 +102,17 @@ grib_check_key_equals $temp aerosolType,typeOfSizeInterval '0 0'
 ${tools_dir}/grib_set -s paramId=210072 $tempSample $temp
 ${tools_dir}/grib_ls -p firstSize,secondSize $temp
 
-# ECC-1303: GRIB2: Setting localDefinitionNumber=1 on chemical source/sink
+# ECC-1303: Setting localDefinitionNumber=1 on chemical source/sink
+# ------------------------------------------------------------------
 ${tools_dir}/grib_set -s paramId=228104,setLocalDefinition=1,localDefinitionNumber=1 $sample2 $temp
-grib_check_key_equals $temp paramId,productDefinitionTemplateNumber,is_chemical_srcsink '228104 76 1'
+grib_check_key_equals $temp paramId,productDefinitionTemplateNumber,is_chemical_srcsink,localUsePresent '228104 76 1 1'
 
+${tools_dir}/grib_set -s stepType=accum,paramId=228104 $sample2 $temp
+grib_check_key_equals $temp shortName,productDefinitionTemplateNumber,is_chemical_srcsink 'e_WLCH4 78 1'
+${tools_dir}/grib_set -s setLocalDefinition=1,localDefinitionNumber=1 $temp $temp1
+${tools_dir}/grib_compare -b totalLength,numberOfSection $temp $temp1
+grib_check_key_equals $temp1 localUsePresent 1
 
+# Clean up
 rm -f $tempSample
-rm -f $temp
+rm -f $temp $temp1