diff --git a/src/gateway/session-utils.single-row-cache.test.ts b/src/gateway/session-utils.single-row-cache.test.ts
index 707279d20821..76d4edb2319b 100644
--- a/src/gateway/session-utils.single-row-cache.test.ts
+++ b/src/gateway/session-utils.single-row-cache.test.ts
@@ -274,6 +274,9 @@ describe("single gateway session row child-session cache", () => {
         expect(subagentRegistryReadMock.buildSubagentRunReadIndex).toHaveBeenCalledTimes(
           1,
         );
+        expect(
+          subagentRegistryReadMock.getSessionDisplaySubagentRunByChildSessionKey,
+        ).not.toHaveBeenCalled();
 
         vi.clearAllMocks();