diff --git a/packages/client-runtime/src/environment/knownEnvironment.test.ts b/packages/client-runtime/src/environment/knownEnvironment.test.ts
index 66bbb1df7e91..032be152fdbc 100644
--- a/packages/client-runtime/src/environment/knownEnvironment.test.ts
+++ b/packages/client-runtime/src/environment/knownEnvironment.test.ts
@@ -6,7 +6,6 @@ import {
   parseScopedProjectKey,
   parseScopedThreadKey,
   scopedProjectKey,
-  scopedRefKey,
   scopedThreadKey,
   scopeProjectRef,
   scopeThreadRef,
@@ -40,8 +39,6 @@ describe("scoped refs", () => {
   const threadRef = scopeThreadRef(environmentId, ThreadId.make("thread-1"));
 
   it("builds stable scoped project and thread keys", () => {
-    expect(scopedRefKey(projectRef)).toBe("environment-test:project-1");
-    expect(scopedRefKey(threadRef)).toBe("environment-test:thread-1");
     expect(scopedProjectKey(projectRef)).toBe("environment-test:project-1");
     expect(scopedThreadKey(threadRef)).toBe("environment-test:thread-1");
   });
diff --git a/packages/client-runtime/src/environment/scoped.ts b/packages/client-runtime/src/environment/scoped.ts
index 354c548c02de..7894c7ba5329 100644
--- a/packages/client-runtime/src/environment/scoped.ts
+++ b/packages/client-runtime/src/environment/scoped.ts
@@ -22,7 +22,7 @@ export function scopeThreadRef(
   return { environmentId, threadId };
 }
 
-export function scopedRefKey(ref: ScopedProjectRef | ScopedThreadRef): string {
+function scopedRefKey(ref: ScopedProjectRef | ScopedThreadRef): string {
   const localId = "projectId" in ref ? ref.projectId : ref.threadId;
   return `${ref.environmentId}:${localId}`;
 }