diff --git a/python/semantic_kernel/connectors/mcp.py b/python/semantic_kernel/connectors/mcp.py
index b2eaa84d19bc..f7fe958258ed 100644
--- a/python/semantic_kernel/connectors/mcp.py
+++ b/python/semantic_kernel/connectors/mcp.py
@@ -195,7 +195,7 @@ def _get_parameter_dict_from_mcp_prompt(prompt: types.Prompt) -> list[dict[str,
         {
             "name": prompt_argument.name,
             "description": prompt_argument.description,
-            "is_required": True,
+            "is_required": bool(prompt_argument.required),
             "type_object": str,
         }
         for prompt_argument in prompt.arguments
diff --git a/python/tests/unit/connectors/mcp/test_mcp.py b/python/tests/unit/connectors/mcp/test_mcp.py
index 8cf15275aaef..c046a033c966 100644
--- a/python/tests/unit/connectors/mcp/test_mcp.py
+++ b/python/tests/unit/connectors/mcp/test_mcp.py
@@ -900,3 +900,36 @@ def echo() -> str:
         result = await client.call_tool(expected_name, {})
         assert not result.isError
         assert result.content == [types.TextContent(type="text", text="hello")]
+
+
+async def test_mcp_prompt_optional_arguments_are_not_required():
+    plugin = MCPStdioPlugin(name="test", command="echo", load_tools=False)
+    plugin.session = AsyncMock(spec=ClientSession)
+    plugin.session.list_prompts.return_value = types.ListPromptsResult(
+        prompts=[
+            types.Prompt(
+                name="review",
+                arguments=[
+                    types.PromptArgument(name="code", required=True),
+                    types.PromptArgument(name="style", required=False),
+                    types.PromptArgument(name="language"),
+                ],
+            )
+        ]
+    )
+    plugin.session.get_prompt.return_value = types.GetPromptResult(
+        messages=[types.PromptMessage(role="user", content=types.TextContent(type="text", text="review this"))]
+    )
+    await plugin.load_prompts()
+    kernel = Kernel()
+    kernel.add_plugin(plugin, "test")
+    function = kernel.get_function("test", "review")
+
+    assert {p.name: p.is_required for p in function.metadata.parameters} == {
+        "code": True,
+        "style": False,
+        "language": False,
+    }
+    result = await kernel.invoke(function, code="x = 1")
+    assert str(result) == "review this"
+    plugin.session.get_prompt.assert_awaited_once_with("review", arguments={"code": "x = 1"})