diff --git a/acp-model/src/commonMain/kotlin/com/agentclientprotocol/model/Methods.kt b/acp-model/src/commonMain/kotlin/com/agentclientprotocol/model/Methods.kt
index 3deb2b6..d8aee8c 100644
--- a/acp-model/src/commonMain/kotlin/com/agentclientprotocol/model/Methods.kt
+++ b/acp-model/src/commonMain/kotlin/com/agentclientprotocol/model/Methods.kt
@@ -37,7 +37,7 @@ public open class AcpMethod(public val methodName: MethodName) {
             where TNotification : AcpNotification, TNotification : AcpWithSessionId
 
     public object MetaMethods {
-        public object CancelRequest : AcpNotificationMethod<CancelRequestNotification>("\$/cancelRequest", CancelRequestNotification.serializer())
+        public object CancelRequest : AcpNotificationMethod<CancelRequestNotification>("\$/cancel_request", CancelRequestNotification.serializer())
     }
 
     public object AgentMethods {
diff --git a/acp-model/src/commonTest/kotlin/com/agentclientprotocol/model/AcpMethodTest.kt b/acp-model/src/commonTest/kotlin/com/agentclientprotocol/model/AcpMethodTest.kt
new file mode 100644
index 0000000..17c69df
--- /dev/null
+++ b/acp-model/src/commonTest/kotlin/com/agentclientprotocol/model/AcpMethodTest.kt
@@ -0,0 +1,12 @@
+package com.agentclientprotocol.model
+
+import com.agentclientprotocol.rpc.MethodName
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class AcpMethodTest {
+    @Test
+    fun `cancel request uses ACP wire method name`() {
+        assertEquals(MethodName("\$/cancel_request"), AcpMethod.MetaMethods.CancelRequest.methodName)
+    }
+}
\ No newline at end of file