diff --git a/vmware_nsxlib/tests/unit/v3/policy/test_resources.py b/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
index d2cab6ad..ab23c78a 100644
--- a/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
+++ b/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
@@ -941,6 +941,14 @@ class TestPolicyIcmpService(NsxPolicyLibTestCase):
             self.assert_called_with_defs(
                 update_call, [service_def, entry_def])
 
+    def test_icmp_type_and_code_in_obj_dict(self):
+        icmp_type, icmp_code = 0, 0
+        entry_def = core_defs.IcmpServiceEntryDef(
+            icmp_type=icmp_type, icmp_code=icmp_code)
+        body = entry_def.get_obj_dict()
+        self.assertEqual(icmp_type, body["icmp_type"])
+        self.assertEqual(icmp_code, body["icmp_code"])
+
 
 class TestPolicyIPProtocolService(NsxPolicyLibTestCase):
 
@@ -1062,6 +1070,13 @@ class TestPolicyIPProtocolService(NsxPolicyLibTestCase):
             self.assert_called_with_defs(service_update_call,
                                          [service_def, entry_def])
 
+    def test_protocol_number_in_obj_dict(self):
+        protocol_number = 0
+        entry_def = core_defs.IPProtocolServiceEntryDef(
+            protocol_number=protocol_number)
+        body = entry_def.get_obj_dict()
+        self.assertEqual(protocol_number, body["protocol_number"])
+
 
 class TestPolicyMixedService(NsxPolicyLibTestCase):
 
diff --git a/vmware_nsxlib/v3/policy/core_defs.py b/vmware_nsxlib/v3/policy/core_defs.py
index 5d72b098..51d5f86c 100644
--- a/vmware_nsxlib/v3/policy/core_defs.py
+++ b/vmware_nsxlib/v3/policy/core_defs.py
@@ -1167,7 +1167,8 @@ class IcmpServiceEntryDef(ServiceEntryDef):
             body['protocol'] = 'ICMPv' + str(self.get_attr('version'))
 
         for attr in ('icmp_type', 'icmp_code'):
-            if self.get_attr(attr):
+            # Note that icmp_type and icmp_code could be 0.
+            if self.get_attr(attr) is not None:
                 body[attr] = self.get_attr(attr)
         return body
 
@@ -1180,7 +1181,8 @@ class IPProtocolServiceEntryDef(ServiceEntryDef):
 
     def get_obj_dict(self):
         body = super(IPProtocolServiceEntryDef, self).get_obj_dict()
-        if self.get_attr('protocol_number'):
+        if self.get_attr('protocol_number') is not None:
+            # Note that protocol_number could be 0.
             body['protocol_number'] = self.get_attr('protocol_number')
         return body