diff --git a/packages/core/src/policy/config.test.ts b/packages/core/src/policy/config.test.ts
index a9fae7a1fa..63feb3042e 100644
--- a/packages/core/src/policy/config.test.ts
+++ b/packages/core/src/policy/config.test.ts
@@ -1169,17 +1169,13 @@ modes = ["plan"]
         r.argsPattern,
     );
     expect(shellRules).toHaveLength(2);
-    expect(
-      shellRules?.some((r) => r.argsPattern?.test('{"command":"git status"}')),
-    ).toBe(true);
-    expect(
-      shellRules?.some((r) => r.argsPattern?.test('{"command":"git diff"}')),
-    ).toBe(true);
-    expect(
-      shellRules?.every(
-        (r) => !r.argsPattern?.test('{"command":"git commit"}'),
-      ),
-    ).toBe(true);
+    expect(shellRules?.some((r) => r.argsPattern?.test('git status'))).toBe(
+      true,
+    );
+    expect(shellRules?.some((r) => r.argsPattern?.test('git diff'))).toBe(true);
+    expect(shellRules?.every((r) => !r.argsPattern?.test('git commit'))).toBe(
+      true,
+    );
 
     const subagentRule = config.rules?.find(
       (r) =>
diff --git a/packages/core/src/policy/persistence.test.ts b/packages/core/src/policy/persistence.test.ts
index 43f52a956d..ae3990c6bd 100644
--- a/packages/core/src/policy/persistence.test.ts
+++ b/packages/core/src/policy/persistence.test.ts
@@ -154,8 +154,9 @@ describe('createPolicyUpdater', () => {
     expect(addedRule).toBeDefined();
     expect(addedRule?.priority).toBe(ALWAYS_ALLOW_PRIORITY);
     expect(addedRule?.argsPattern).toEqual(
-      new RegExp(`"command":"git\\ status(?:[\\s"]|\\\\")`),
+      new RegExp(`^git\\ status(?:\\s|$)`),
     );
+    expect(addedRule?.argName).toBe('command');
 
     // Verify file written
     expect(fs.open).toHaveBeenCalledWith(expect.stringMatching(/\.tmp$/), 'wx');
diff --git a/packages/core/src/policy/policy-updater.test.ts b/packages/core/src/policy/policy-updater.test.ts
index 40780a1850..2d22d334ad 100644
--- a/packages/core/src/policy/policy-updater.test.ts
+++ b/packages/core/src/policy/policy-updater.test.ts
@@ -75,7 +75,8 @@ describe('createPolicyUpdater', () => {
       expect.objectContaining({
         toolName: 'run_shell_command',
         priority: ALWAYS_ALLOW_PRIORITY,
-        argsPattern: new RegExp('"command":"echo(?:[\\s"]|\\\\")'),
+        argsPattern: new RegExp('^echo(?:\\s|$)'),
+        argName: 'command',
       }),
     );
     expect(policyEngine.addRule).toHaveBeenNthCalledWith(
@@ -83,7 +84,8 @@ describe('createPolicyUpdater', () => {
       expect.objectContaining({
         toolName: 'run_shell_command',
         priority: ALWAYS_ALLOW_PRIORITY,
-        argsPattern: new RegExp('"command":"ls(?:[\\s"]|\\\\")'),
+        argsPattern: new RegExp('^ls(?:\\s|$)'),
+        argName: 'command',
       }),
     );
   });
@@ -103,7 +105,8 @@ describe('createPolicyUpdater', () => {
       expect.objectContaining({
         toolName: 'run_shell_command',
         priority: ALWAYS_ALLOW_PRIORITY,
-        argsPattern: new RegExp('"command":"git(?:[\\s"]|\\\\")'),
+        argsPattern: new RegExp('^git(?:\\s|$)'),
+        argName: 'command',
       }),
     );
   });