diff --git a/ethereum/statetransition/src/main/java/tech/pegasys/teku/statetransition/util/BlockBlobSidecarsTrackersPoolImpl.java b/ethereum/statetransition/src/main/java/tech/pegasys/teku/statetransition/util/BlockBlobSidecarsTrackersPoolImpl.java
index 10106122acf..3dfbabfeabe 100644
--- a/ethereum/statetransition/src/main/java/tech/pegasys/teku/statetransition/util/BlockBlobSidecarsTrackersPoolImpl.java
+++ b/ethereum/statetransition/src/main/java/tech/pegasys/teku/statetransition/util/BlockBlobSidecarsTrackersPoolImpl.java
@@ -695,7 +695,7 @@ private synchronized SafeFuture<Void> fetchMissingContentFromLocalEL(
             blobAndProofs -> {
               checkArgument(
                   blobAndProofs.size() == versionedHashes.size(),
-                  "Queried %d versionedHashed but got %s blobAndProofs",
+                  "Queried %s versionedHashed but got %s blobAndProofs",
                   versionedHashes.size(),
                   blobAndProofs.size());