diff --git a/pyobas/signatures/signature_type.py b/pyobas/signatures/signature_type.py
index b8b16ca..8b2c410 100644
--- a/pyobas/signatures/signature_type.py
+++ b/pyobas/signatures/signature_type.py
@@ -22,7 +22,7 @@ def __init__(
     # }
     def make_struct_for_matching(self, data):
         struct = {
-            "type": self.match_policy.match_type,
+            "type": self.match_policy.match_type.value,
             "data": data,
         }
 
diff --git a/test/signatures/test_signature_type.py b/test/signatures/test_signature_type.py
index 8fefadf..b90b01b 100644
--- a/test/signatures/test_signature_type.py
+++ b/test/signatures/test_signature_type.py
@@ -14,7 +14,7 @@ def test_make_struct_create_expected_struct_for_simple_sig_type(self):
         data = "just a simple string"
         simple_struct = simple_signature_type.make_struct_for_matching(data=data)
 
-        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_SIMPLE)
+        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_SIMPLE.value)
         self.assertEqual(simple_struct.get("data"), data)
         self.assertFalse("score" in simple_struct.keys())
 
@@ -30,7 +30,7 @@ def test_make_struct_create_expected_struct_for_fuzzy_sig_type(self):
         data = "just another simple string"
         simple_struct = fuzzy_signature_type.make_struct_for_matching(data=data)
 
-        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_FUZZY)
+        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_FUZZY.value)
         self.assertEqual(simple_struct.get("data"), data)
         self.assertEqual(simple_struct.get("score"), fuzzy_signature_type_score)
 
@@ -48,7 +48,7 @@ def test_make_struct_create_expected_struct_for_fuzzy_sig_type_when_score_is_0(
         data = "just another simple string"
         simple_struct = fuzzy_signature_type.make_struct_for_matching(data=data)
 
-        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_FUZZY)
+        self.assertEqual(simple_struct.get("type"), MatchTypes.MATCH_TYPE_FUZZY.value)
         self.assertEqual(simple_struct.get("data"), data)
         self.assertEqual(simple_struct.get("score"), fuzzy_signature_type_score)