diff --git a/codex-rs/core/src/config/config_tests.rs b/codex-rs/core/src/config/config_tests.rs
index 6c39f1f1e9..c95a2f0fdf 100644
--- a/codex-rs/core/src/config/config_tests.rs
+++ b/codex-rs/core/src/config/config_tests.rs
@@ -3082,8 +3082,7 @@ fn web_search_mode_disabled_overrides_legacy_request() {
 #[test]
 fn web_search_mode_for_turn_uses_preference_for_read_only() {
     let web_search_mode = Constrained::allow_any(WebSearchMode::Cached);
-    let permission_profile =
-        PermissionProfile::from_legacy_sandbox_policy(&SandboxPolicy::new_read_only_policy());
+    let permission_profile = PermissionProfile::read_only();
     let mode = resolve_web_search_mode_for_turn(&web_search_mode, &permission_profile);
 
     assert_eq!(mode, WebSearchMode::Cached);
@@ -7246,29 +7245,26 @@ async fn derive_sandbox_policy_preserves_windows_downgrade_for_unsupported_fallb
     let active_project = ProjectConfig {
         trust_level: Some(TrustLevel::Trusted),
     };
-    let constrained = Constrained::new(
-        PermissionProfile::from_legacy_sandbox_policy(&SandboxPolicy::new_workspace_write_policy()),
-        |candidate| {
-            if matches!(
-                candidate,
-                PermissionProfile::Managed {
-                    file_system: ManagedFileSystemPermissions::Restricted { entries, .. },
-                    ..
-                } if entries
-                        .iter()
-                        .any(|entry| entry.access.can_write())
-            ) {
-                Ok(())
-            } else {
-                Err(ConstraintError::InvalidValue {
-                    field_name: "sandbox_mode",
-                    candidate: format!("{candidate:?}"),
-                    allowed: "[WorkspaceWrite]".to_string(),
-                    requirement_source: RequirementSource::Unknown,
-                })
-            }
-        },
-    )?;
+    let constrained = Constrained::new(PermissionProfile::workspace_write(), |candidate| {
+        if matches!(
+            candidate,
+            PermissionProfile::Managed {
+                file_system: ManagedFileSystemPermissions::Restricted { entries, .. },
+                ..
+            } if entries
+                    .iter()
+                    .any(|entry| entry.access.can_write())
+        ) {
+            Ok(())
+        } else {
+            Err(ConstraintError::InvalidValue {
+                field_name: "sandbox_mode",
+                candidate: format!("{candidate:?}"),
+                allowed: "[WorkspaceWrite]".to_string(),
+                requirement_source: RequirementSource::Unknown,
+            })
+        }
+    })?;
 
     let resolution = derive_legacy_sandbox_policy_for_test(
         &cfg,