diff --git a/README.md b/README.md
index 9d7951f..054c2b8 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,6 @@ openclaw config set plugins.entries.agent-control-openclaw-plugin.config.userAge
 # Remove optional keys
 openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.apiKey
 openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.logLevel
-openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.debug
 openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.agentId
 openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.agentVersion
 openclaw config unset plugins.entries.agent-control-openclaw-plugin.config.userAgent
@@ -96,5 +95,3 @@ Set `config.logLevel` to:
 
 - `info` for one-line lifecycle logs such as client init, warmup, and agent syncs
 - `debug` for verbose startup, sync, and evaluation diagnostics
-
-The older `config.debug` flag is still accepted as a deprecated alias for `logLevel=debug`.
diff --git a/openclaw.plugin.json b/openclaw.plugin.json
index ecadb48..adbfe0c 100644
--- a/openclaw.plugin.json
+++ b/openclaw.plugin.json
@@ -37,9 +37,6 @@
       "logLevel": {
         "type": "string",
         "enum": ["warn", "info", "debug"]
-      },
-      "debug": {
-        "type": "boolean"
       }
     }
   },
@@ -67,10 +64,6 @@
     "logLevel": {
       "label": "Log Level",
       "help": "Controls plugin verbosity: warn logs only warnings, errors, and block events; info adds high-level lifecycle logs; debug adds verbose diagnostics."
-    },
-    "debug": {
-      "label": "Debug Logging",
-      "help": "Deprecated alias for logLevel=debug."
     }
   }
 }
diff --git a/src/logging.ts b/src/logging.ts
index 8e9ed8d..1add96c 100644
--- a/src/logging.ts
+++ b/src/logging.ts
@@ -12,9 +12,6 @@ export function resolveLogLevel(cfg: AgentControlPluginConfig): LogLevel {
   if (configuredLevel && isLogLevel(configuredLevel)) {
     return configuredLevel;
   }
-  if (cfg.debug === true) {
-    return "debug";
-  }
   return "warn";
 }
 
diff --git a/src/types.ts b/src/types.ts
index dd6764a..a7a173c 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -13,7 +13,6 @@ export type AgentControlPluginConfig = {
   userAgent?: string;
   failClosed?: boolean;
   logLevel?: LogLevel;
-  debug?: boolean;
 };
 
 export type AgentControlStep = {
diff --git a/test/agent-control-plugin.test.ts b/test/agent-control-plugin.test.ts
index 92022f3..c5d4f12 100644
--- a/test/agent-control-plugin.test.ts
+++ b/test/agent-control-plugin.test.ts
@@ -216,11 +216,11 @@ describe("agent-control plugin logging and blocking", () => {
     expect(messages.some((message) => message.includes("evaluated agent="))).toBe(false);
   });
 
-  it("emits verbose traces when the deprecated debug flag is enabled", async () => {
-    // Given the deprecated debug flag enabled in plugin configuration
+  it("emits verbose traces when debug log level is enabled", async () => {
+    // Given debug log level enabled in plugin configuration
     const api = createMockApi({
       serverUrl: "http://localhost:8000",
-      debug: true,
+      logLevel: "debug",
     });
 
     // When the plugin evaluates a tool call
diff --git a/test/logging.test.ts b/test/logging.test.ts
index 8d5362e..882e45d 100644
--- a/test/logging.test.ts
+++ b/test/logging.test.ts
@@ -26,28 +26,6 @@ describe("resolveLogLevel", () => {
     expect(infoLevel).toBe("info");
     expect(debugLevel).toBe("debug");
   });
-
-  it("prefers logLevel over the deprecated debug flag", () => {
-    // Given both a logLevel value and the deprecated debug flag
-    const config = { logLevel: "warn", debug: true } as const;
-
-    // When the effective log level is resolved
-    const level = resolveLogLevel(config);
-
-    // Then the explicit logLevel takes precedence
-    expect(level).toBe("warn");
-  });
-
-  it("falls back to debug for deprecated compatibility", () => {
-    // Given an invalid logLevel alongside debug compatibility mode
-    const config = { logLevel: "verbose" as never, debug: true };
-
-    // When the effective log level is resolved
-    const level = resolveLogLevel(config);
-
-    // Then debug mode is used as the compatibility fallback
-    expect(level).toBe("debug");
-  });
 });
 
 describe("createPluginLogger", () => {