diff --git a/src/agents/model-fallback.ts b/src/agents/model-fallback.ts
index 91f0470a9e0..08fc71808a5 100644
--- a/src/agents/model-fallback.ts
+++ b/src/agents/model-fallback.ts
@@ -25,14 +25,13 @@ import {
 import { LiveSessionModelSwitchError } from "./live-model-switch-error.js";
 import { logModelFallbackDecision } from "./model-fallback-observation.js";
 import type { FallbackAttempt, ModelCandidate } from "./model-fallback.types.js";
+import { modelKey, normalizeModelRef } from "./model-selection-normalize.js";
 import {
   buildConfiguredAllowlistKeys,
   buildModelAliasIndex,
-  modelKey,
-  normalizeModelRef,
   resolveConfiguredModelRef,
   resolveModelRefFromString,
-} from "./model-selection.js";
+} from "./model-selection-resolve.js";
 import { isLikelyContextOverflowError } from "./pi-embedded-helpers/errors.js";
 import type { FailoverReason } from "./pi-embedded-helpers/types.js";