diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 045320603..dc4c9126a 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -110,6 +110,7 @@ if( HAVE_BUILD_TOOLS )
         pseudo_diag
         wrap
         grib_levtype
+        grib_typeOfLevel
         grib_grid_unstructured
         grib_grid_lambert_conformal
         grib_grid_polar_stereographic
diff --git a/tests/grib_typeOfLevel.sh b/tests/grib_typeOfLevel.sh
new file mode 100755
index 000000000..491d193a9
--- /dev/null
+++ b/tests/grib_typeOfLevel.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+# (C) Copyright 2005- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+# 
+# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
+# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
+#
+
+. ./include.sh
+set -u
+label="grib_typeOfLevel_test"
+temp=temp.$label.txt
+
+if [ ! -d "$ECCODES_DEFINITION_PATH" ]; then
+    echo "Test $0 disabled. No definitions directory"
+    exit 0
+fi
+
+# Make sure all typeOfLevel values are unique
+def_file="$ECCODES_DEFINITION_PATH/grib2/typeOfLevelConcept.def"
+
+rm -f $temp
+grep "^'" $def_file | awk -F= '{print $1}' | tr -d "' " | sort | uniq -d > $temp
+
+if [ -s "$temp" ]; then
+    # File exists and has a size greater than zero
+    echo "ERROR: Duplicates found in $def_file" >&2
+    cat $temp
+    exit 1
+else
+    echo "No duplicates in $def_file"
+fi
+
+rm -f $temp