diff --git a/src/config/config.plugin-validation.test.ts b/src/config/config.plugin-validation.test.ts
index 464a5f37c..5eec7f2ed 100644
--- a/src/config/config.plugin-validation.test.ts
+++ b/src/config/config.plugin-validation.test.ts
@@ -41,7 +41,10 @@ describe("config plugin validation", () => {
   const suiteEnv = () =>
     ({
       ...process.env,
+      HOME: suiteHome,
+      OPENCLAW_HOME: undefined,
       OPENCLAW_STATE_DIR: path.join(suiteHome, ".openclaw"),
+      CLAWDBOT_STATE_DIR: undefined,
       OPENCLAW_PLUGIN_MANIFEST_CACHE_MS: "10000",
     }) satisfies NodeJS.ProcessEnv;
 
diff --git a/src/config/plugin-auto-enable.test.ts b/src/config/plugin-auto-enable.test.ts
index da358084d..fd2ccfa4b 100644
--- a/src/config/plugin-auto-enable.test.ts
+++ b/src/config/plugin-auto-enable.test.ts
@@ -214,6 +214,7 @@ describe("applyPluginAutoEnable", () => {
       },
       env: {
         ...process.env,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_STATE_DIR: stateDir,
         CLAWDBOT_STATE_DIR: undefined,
         OPENCLAW_BUNDLED_PLUGINS_DIR: "/nonexistent/bundled/plugins",
@@ -439,6 +440,7 @@ describe("applyPluginAutoEnable", () => {
         config: makeApnChannelConfig(),
         env: {
           ...process.env,
+          OPENCLAW_HOME: undefined,
           OPENCLAW_STATE_DIR: stateDir,
           CLAWDBOT_STATE_DIR: undefined,
           OPENCLAW_BUNDLED_PLUGINS_DIR: "/nonexistent/bundled/plugins",
diff --git a/src/plugins/discovery.test.ts b/src/plugins/discovery.test.ts
index c771b17a9..39bc1775a 100644
--- a/src/plugins/discovery.test.ts
+++ b/src/plugins/discovery.test.ts
@@ -16,9 +16,9 @@ function makeTempDir() {
 
 function buildDiscoveryEnv(stateDir: string): NodeJS.ProcessEnv {
   return {
-    ...process.env,
     OPENCLAW_STATE_DIR: stateDir,
     CLAWDBOT_STATE_DIR: undefined,
+    OPENCLAW_HOME: undefined,
     OPENCLAW_BUNDLED_PLUGINS_DIR: "/nonexistent/bundled/plugins",
   };
 }
diff --git a/src/plugins/loader.test.ts b/src/plugins/loader.test.ts
index 2241fbd1f..884c81989 100644
--- a/src/plugins/loader.test.ts
+++ b/src/plugins/loader.test.ts
@@ -540,6 +540,7 @@ describe("loadOpenClawPlugins", () => {
       env: {
         ...process.env,
         HOME: homeA,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_STATE_DIR: stateDir,
         OPENCLAW_BUNDLED_PLUGINS_DIR: bundledDir,
       },
@@ -549,6 +550,7 @@ describe("loadOpenClawPlugins", () => {
       env: {
         ...process.env,
         HOME: homeB,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_STATE_DIR: stateDir,
         OPENCLAW_BUNDLED_PLUGINS_DIR: bundledDir,
       },
@@ -679,6 +681,7 @@ describe("loadOpenClawPlugins", () => {
       env: {
         ...process.env,
         HOME: homeDir,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_BUNDLED_PLUGINS_DIR: override,
       },
       config: {
@@ -1814,6 +1817,7 @@ describe("loadOpenClawPlugins", () => {
       cwd: process.cwd(),
       env: {
         ...process.env,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_BUNDLED_PLUGINS_DIR: "/nonexistent/bundled/plugins",
       },
       encoding: "utf-8",
diff --git a/src/plugins/manifest-registry.test.ts b/src/plugins/manifest-registry.test.ts
index 7d5421b1a..e84158b3c 100644
--- a/src/plugins/manifest-registry.test.ts
+++ b/src/plugins/manifest-registry.test.ts
@@ -346,6 +346,7 @@ describe("loadPluginManifestRegistry", () => {
       env: {
         ...process.env,
         HOME: homeA,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_STATE_DIR: path.join(homeA, ".state"),
       },
     });
@@ -355,6 +356,7 @@ describe("loadPluginManifestRegistry", () => {
       env: {
         ...process.env,
         HOME: homeB,
+        OPENCLAW_HOME: undefined,
         OPENCLAW_STATE_DIR: path.join(homeB, ".state"),
       },
     });