diff --git a/codex-rs/app-server/tests/suite/v2/thread_resume.rs b/codex-rs/app-server/tests/suite/v2/thread_resume.rs
index a8277e04f9..80ae756888 100644
--- a/codex-rs/app-server/tests/suite/v2/thread_resume.rs
+++ b/codex-rs/app-server/tests/suite/v2/thread_resume.rs
@@ -1772,7 +1772,6 @@ async fn thread_resume_accepts_personality_override() -> Result<()> {
     let start_id = primary
         .send_thread_start_request(ThreadStartParams {
             model: Some("gpt-5.2-codex".to_string()),
-            base_instructions: Some(Some(CODEX_5_2_INSTRUCTIONS_TEMPLATE_DEFAULT.to_string())),
             ..Default::default()
         })
         .await?;
@@ -1811,7 +1810,6 @@ async fn thread_resume_accepts_personality_override() -> Result<()> {
         .send_thread_resume_request(ThreadResumeParams {
             thread_id: thread.id,
             model: Some("gpt-5.2-codex".to_string()),
-            base_instructions: Some(Some(CODEX_5_2_INSTRUCTIONS_TEMPLATE_DEFAULT.to_string())),
             personality: Some(Personality::Friendly),
             ..Default::default()
         })
diff --git a/codex-rs/app-server/tests/suite/v2/turn_start.rs b/codex-rs/app-server/tests/suite/v2/turn_start.rs
index 7d55c96fae..e8f3e1df2c 100644
--- a/codex-rs/app-server/tests/suite/v2/turn_start.rs
+++ b/codex-rs/app-server/tests/suite/v2/turn_start.rs
@@ -1041,12 +1041,10 @@ async fn turn_start_uses_migrated_pragmatic_personality_without_override_v2() ->
     .await??;
 
     let request = response_mock.single_request();
-    let developer_texts = request.message_input_texts("developer");
+    let instructions_text = request.instructions_text();
     assert!(
-        developer_texts
-            .iter()
-            .any(|text| text.contains(LOCAL_PRAGMATIC_TEMPLATE)),
-        "expected startup-migrated pragmatic personality in developer instructions, got: {developer_texts:?}"
+        instructions_text.contains(LOCAL_PRAGMATIC_TEMPLATE),
+        "expected startup-migrated pragmatic personality in model instructions, got: {instructions_text:?}"
     );
 
     Ok(())