diff --git a/scripts/py_matter_idl/matter_idl/data_model_xml/handlers/parsing.py b/scripts/py_matter_idl/matter_idl/data_model_xml/handlers/parsing.py
index fc1631080c3a7e..c2753d4221cab4 100644
--- a/scripts/py_matter_idl/matter_idl/data_model_xml/handlers/parsing.py
+++ b/scripts/py_matter_idl/matter_idl/data_model_xml/handlers/parsing.py
@@ -69,14 +69,14 @@ def ParseOptionalInt(value: str) -> Optional[int]:
     "uint48": "int48u",
     "uint52": "int52u",
     "uint64": "int64u",
-    # signed
-    "sint8": "int8s",
-    "sint16": "int16s",
-    "sint24": "int24s",
-    "sint32": "int32s",
-    "sint48": "int48s",
-    "sint52": "int52s",
-    "sint64": "int64s",
+    # signed (map to what zapxml/matter currently has)
+    "int8": "int8s",
+    "int16": "int16s",
+    "int24": "int24s",
+    "int32": "int32s",
+    "int48": "int48s",
+    "int52": "int52s",
+    "int64": "int64s",
     # other
     "bool": "boolean",
     "string": "char_string",
diff --git a/scripts/py_matter_idl/matter_idl/test_data_model_xml.py b/scripts/py_matter_idl/matter_idl/test_data_model_xml.py
index 7f4ba3153214de..ec2f0cae33c990 100755
--- a/scripts/py_matter_idl/matter_idl/test_data_model_xml.py
+++ b/scripts/py_matter_idl/matter_idl/test_data_model_xml.py
@@ -72,6 +72,44 @@ def testBasicInput(self):
 
         self.assertEqual(xml_idl, expected_idl)
 
+    def testSignedTypes(self):
+
+        xml_idl = XmlToIdl('''
+            <cluster id="123" name="Test" revision="1">
+              <attributes>
+                <attribute id="0x0000" name="First" type="int16">
+                  <access read="true" readPrivilege="view"/>
+                  <mandatoryConform/>
+                </attribute>
+                <attribute id="0x0001" name="Second" type="int16s">
+                  <access read="true" readPrivilege="view"/>
+                  <mandatoryConform/>
+                </attribute>
+                <attribute id="0x0002" name="Third" type="int32u">
+                  <access read="true" readPrivilege="view"/>
+                  <mandatoryConform/>
+                </attribute>
+              </attributes>
+            </cluster>
+        ''')
+
+        expected_idl = IdlTextToIdl('''
+            client cluster Test = 123 {
+               readonly attribute int16s first = 0;
+               readonly attribute int16s second = 1;
+               readonly attribute int32u third = 2;
+
+               readonly attribute attrib_id attributeList[] = 65531;
+               readonly attribute event_id eventList[] = 65530;
+               readonly attribute command_id acceptedCommandList[] = 65529;
+               readonly attribute command_id generatedCommandList[] = 65528;
+               readonly attribute bitmap32 featureMap = 65532;
+               readonly attribute int16u clusterRevision = 65533;
+           }
+        ''')
+
+        self.assertEqual(xml_idl, expected_idl)
+
     def testEnumRange(self):
         # Check heuristic for enum ranges