diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2f4be2309d..f7d924954f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Gateway/Daemon: forward `TMPDIR` into installed service environments so macOS LaunchAgent gateway runs can open SQLite temp/journal files reliably instead of failing with `SQLITE_CANTOPEN`. (#20512) Thanks @Clawborn.
 - iOS/Screen: move `WKWebView` lifecycle ownership into `ScreenWebView` coordinator and explicit attach/detach flow to reduce gesture/lifecycle crash risk (`__NSArrayM insertObject:atIndex:` paths) during screen tab updates. (#20366) Thanks @ngutman.
 - Gateway/TUI: honor `agents.defaults.blockStreamingDefault` for `chat.send` by removing the hardcoded block-streaming disable override, so replies can use configured block-mode delivery. (#19693) Thanks @neipor.
 - Protocol/Apple: regenerate Swift gateway models for `push.test` so `pnpm protocol:check` stays green on main. Thanks @mbelinky.
diff --git a/src/daemon/service-env.test.ts b/src/daemon/service-env.test.ts
index 44d74009deb..ea67a0c31d6 100644
--- a/src/daemon/service-env.test.ts
+++ b/src/daemon/service-env.test.ts
@@ -290,21 +290,12 @@ describe("buildServiceEnvironment", () => {
     expect(env.TMPDIR).toBe("/var/folders/xw/abc123/T/");
   });
 
-  it("forwards LANG from the host environment", () => {
-    const env = buildServiceEnvironment({
-      env: { HOME: "/home/user", LANG: "en_US.UTF-8" },
-      port: 18789,
-    });
-    expect(env.LANG).toBe("en_US.UTF-8");
-  });
-
-  it("omits TMPDIR and LANG when not set in host environment", () => {
+  it("omits TMPDIR when not set in host environment", () => {
     const env = buildServiceEnvironment({
       env: { HOME: "/home/user" },
       port: 18789,
     });
     expect(env.TMPDIR).toBeUndefined();
-    expect(env.LANG).toBeUndefined();
   });
 
   it("uses profile-specific unit and label", () => {
@@ -327,12 +318,11 @@ describe("buildNodeServiceEnvironment", () => {
     expect(env.HOME).toBe("/home/user");
   });
 
-  it("forwards TMPDIR and LANG for node services", () => {
+  it("forwards TMPDIR for node services", () => {
     const env = buildNodeServiceEnvironment({
-      env: { HOME: "/home/user", TMPDIR: "/tmp/custom", LANG: "en_US.UTF-8" },
+      env: { HOME: "/home/user", TMPDIR: "/tmp/custom" },
     });
     expect(env.TMPDIR).toBe("/tmp/custom");
-    expect(env.LANG).toBe("en_US.UTF-8");
   });
 });
 
diff --git a/src/daemon/service-env.ts b/src/daemon/service-env.ts
index d162de3428a..dab858dc05a 100644
--- a/src/daemon/service-env.ts
+++ b/src/daemon/service-env.ts
@@ -215,7 +215,6 @@ export function buildServiceEnvironment(params: {
   return {
     HOME: env.HOME,
     TMPDIR: env.TMPDIR,
-    LANG: env.LANG,
     PATH: buildMinimalServicePath({ env }),
     OPENCLAW_PROFILE: profile,
     OPENCLAW_STATE_DIR: stateDir,
@@ -239,7 +238,6 @@ export function buildNodeServiceEnvironment(params: {
   return {
     HOME: env.HOME,
     TMPDIR: env.TMPDIR,
-    LANG: env.LANG,
     PATH: buildMinimalServicePath({ env }),
     OPENCLAW_STATE_DIR: stateDir,
     OPENCLAW_CONFIG_PATH: configPath,