diff --git a/lix/libutil/backoff.hh b/lix/libutil/backoff.hh
index e4a97163d..81757baca 100644
--- a/lix/libutil/backoff.hh
+++ b/lix/libutil/backoff.hh
@@ -27,7 +27,7 @@ struct BackoffTiming
  * The increase factor 2^i is capped at 2^48, the initial backoff value is capped at 30s
  * (30000ms) to prevent overflows.
  */
-Generator<BackoffTiming> backoffTimeouts(
+inline Generator<BackoffTiming> backoffTimeouts(
     unsigned int maxAttempts,
     std::chrono::milliseconds maxBackoff,
     std::chrono::milliseconds initialBackoff,