1 files changed, 1 insertions, 1 deletions
diff --git a/core/src/test/java/org/elasticsearch/search/internal/ShardSearchTransportRequestTests.java b/core/src/test/java/org/elasticsearch/search/internal/ShardSearchTransportRequestTests.java
index d0132cca7a..b93b3795cb 100644
--- a/core/src/test/java/org/elasticsearch/search/internal/ShardSearchTransportRequestTests.java
+++ b/core/src/test/java/org/elasticsearch/search/internal/ShardSearchTransportRequestTests.java
@@ -87,7 +87,7 @@ public class ShardSearchTransportRequestTests extends AbstractSearchTestCase {
 
     private ShardSearchTransportRequest createShardSearchTransportRequest() throws IOException {
         SearchRequest searchRequest = createSearchRequest();
-        ShardId shardId = new ShardId(randomAsciiOfLengthBetween(2, 10), randomAsciiOfLengthBetween(2, 10), randomInt());
+        ShardId shardId = new ShardId(randomAlphaOfLengthBetween(2, 10), randomAlphaOfLengthBetween(2, 10), randomInt());
         final AliasFilter filteringAliases;
         if (randomBoolean()) {
             String[] strings = generateRandomStringArray(10, 10, false, false);