diff --git a/src/index.ts b/src/index.ts
index dbf3c138..4ca53895 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -173,7 +173,7 @@ export function throttling(octokit: Octokit, octokitOptions: OctokitOptions) {
       return {};
     })();
 
-    if (wantRetry) {
+    if (wantRetry && retryAfter) {
       options.request.retryCount++;
       return retryAfter * state.retryAfterBaseValue;
     }