diff --git a/x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/slm/SnapshotRetentionConfigurationTests.java b/x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/slm/SnapshotRetentionConfigurationTests.java
index 2ac6b633c0f09..cf4672d183ada 100644
--- a/x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/slm/SnapshotRetentionConfigurationTests.java
+++ b/x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/slm/SnapshotRetentionConfigurationTests.java
@@ -349,7 +349,7 @@ private SnapshotInfo makeFailureInfo(long startTime) {
         }
         assert failureCount == failures.size();
         SnapshotInfo snapInfo = new SnapshotInfo(
-            new Snapshot(REPO, new SnapshotId("snap-fail-" + randomAlphaOfLength(3), "uuid-fail")),
+            new Snapshot(REPO, new SnapshotId("snap-fail-" + randomUUID(), "uuid-fail")),
             Collections.singletonList("foo-fail"),
             Collections.singletonList("bar-fail"),
             Collections.emptyList(),
@@ -377,7 +377,7 @@ private SnapshotInfo makePartialInfo(long startTime) {
         }
         assert failureCount == failures.size();
         SnapshotInfo snapInfo = new SnapshotInfo(
-            new Snapshot(REPO, new SnapshotId("snap-fail-" + randomAlphaOfLength(3), "uuid-fail")),
+            new Snapshot(REPO, new SnapshotId("snap-fail-" + randomUUID(), "uuid-fail")),
             Collections.singletonList("foo-fail"),
             Collections.singletonList("bar-fail"),
             Collections.emptyList(),