diff --git a/tests/codes_split_file.sh b/tests/codes_split_file.sh
index c634c8a6c..641739a55 100755
--- a/tests/codes_split_file.sh
+++ b/tests/codes_split_file.sh
@@ -74,14 +74,6 @@ status=$?
 set -e
 [ $status -eq 1 ]
 
-if [ $ECCODES_ON_WINDOWS -eq 0 ]; then
-    set +e
-    ${tools_dir}/codes_split_file 9 /dev/null
-    status=$?
-    set -e
-    [ $status -eq 1 ]
-fi
-
 set +e
 ${tools_dir}/codes_split_file 0 $input
 status=$?
diff --git a/tests/grib_ls.sh b/tests/grib_ls.sh
index 3329ae48c..f702c0747 100755
--- a/tests/grib_ls.sh
+++ b/tests/grib_ls.sh
@@ -115,6 +115,14 @@ echo "ECC-278: grib_ls -n namespace..."
 ${tools_dir}/grib_ls -n geography $ECCODES_SAMPLES_PATH/reduced_ll_sfc_grib2.tmpl
 ${tools_dir}/grib_ls -n data      $sample_g1
 
+set +e
+${tools_dir}/grib_ls -n nosuchnamespace $sample_g1 > $tempText 2>&1
+status=$?
+set -e
+[ $status -ne 0 ]
+grep -q "does not contain any key" $tempText
+
+
 # Angle subdivisions
 grib_check_key_equals $sample_g1 angleSubdivisions 1000
 grib_check_key_equals $sample_g2 angleSubdivisions 1000000