diff --git a/tests/cputestdata/cpu-convert.py b/tests/cputestdata/cpu-cpuid.py
similarity index 98%
rename from tests/cputestdata/cpu-convert.py
rename to tests/cputestdata/cpu-cpuid.py
index e069408c8cf698307c4a6f71605ecd262d69b739..a4dc233780378c46e73b8ef0c755f70a08b6d4e3 100755
--- a/tests/cputestdata/cpu-convert.py
+++ b/tests/cputestdata/cpu-cpuid.py
@@ -222,7 +222,7 @@ def propAdd(props, feature, value):
         props[name] = value
 
 
-for path in sys.argv[1:]:
+def convert(path):
     props, cpuid = parseFeatureWords(path)
 
     for feature in cpuidMap:
@@ -247,3 +247,18 @@ for path in sys.argv[1:]:
                    "id": "model-expansion"},
                   f, indent = 2, separators = (',', ': '))
         f.write("\n")
+
+
+if len(sys.argv) < 3:
+    print "Usage: %s convert json_file..." % sys.argv[0]
+    sys.exit(1)
+
+action = sys.argv[1]
+args = sys.argv[2:]
+
+if action == "convert":
+    for path in args:
+        convert(path)
+else:
+    print "Unknown action: " + action
+    sys.exit(1)
diff --git a/tests/cputestdata/cpu-parse.sh b/tests/cputestdata/cpu-parse.sh
index 86bcb030d14839ed3c395af26170c455e606e595..d823c399b0f76b5218632fc3d529123d10861946 100755
--- a/tests/cputestdata/cpu-parse.sh
+++ b/tests/cputestdata/cpu-parse.sh
@@ -53,7 +53,7 @@ json <<<"$data" >$fname.json
 if [[ -s $fname.json ]]; then
     echo $fname.json
     if ! grep -q model-expansion $fname.json; then
-        $(dirname $0)/cpu-convert.py $fname.json
+        $(dirname $0)/cpu-cpuid.py convert $fname.json
     fi
 else
     rm $fname.json