diff --git a/pkg/agent/hook_process_test.go b/pkg/agent/hook_process_test.go
index 9b1f0d2e8..9e95d105e 100644
--- a/pkg/agent/hook_process_test.go
+++ b/pkg/agent/hook_process_test.go
@@ -218,13 +218,14 @@ func TestAgentLoop_MountProcessHook_IsolationSupportsRelativeDirAndCommand(t *te
 		t.Fatal(err)
 	}
 
-	if err := al.MountProcessHook(context.Background(), "ipc-relative", ProcessHookOptions{
+	mountErr := al.MountProcessHook(context.Background(), "ipc-relative", ProcessHookOptions{
 		Command:      []string{"./hook-helper", "-test.run=TestProcessHook_HelperProcess", "--"},
 		Dir:          relHookDir,
 		Env:          processHookHelperEnv("rewrite", ""),
 		InterceptLLM: true,
-	}); err != nil {
-		t.Fatalf("MountProcessHook failed with relative dir/command under isolation: %v", err)
+	})
+	if mountErr != nil {
+		t.Fatalf("MountProcessHook failed with relative dir/command under isolation: %v", mountErr)
 	}
 
 	resp, err := al.runAgentLoop(context.Background(), agent, processOptions{
diff --git a/pkg/isolation/platform_linux_test.go b/pkg/isolation/platform_linux_test.go
index a082b1663..2dcca96ce 100644
--- a/pkg/isolation/platform_linux_test.go
+++ b/pkg/isolation/platform_linux_test.go
@@ -59,8 +59,8 @@ func TestResolveLinuxWorkingDir_ResolvesRelativeDir(t *testing.T) {
 			t.Fatalf("restore cwd: %v", chdirErr)
 		}
 	}()
-	if err := os.Chdir(cwd); err != nil {
-		t.Fatal(err)
+	if chdirErr := os.Chdir(cwd); chdirErr != nil {
+		t.Fatal(chdirErr)
 	}
 
 	resolvedDir, execDir, err := resolveLinuxWorkingDir("./hooks", "./hook.sh")