1 files changed, 1 insertions, 1 deletions
diff --git a/modules/ingest-common/src/test/java/org/elasticsearch/ingest/common/JoinProcessorFactoryTests.java b/modules/ingest-common/src/test/java/org/elasticsearch/ingest/common/JoinProcessorFactoryTests.java
index 68b2daecb4..0eda639afc 100644
--- a/modules/ingest-common/src/test/java/org/elasticsearch/ingest/common/JoinProcessorFactoryTests.java
+++ b/modules/ingest-common/src/test/java/org/elasticsearch/ingest/common/JoinProcessorFactoryTests.java
@@ -34,7 +34,7 @@ public class JoinProcessorFactoryTests extends ESTestCase {
         Map<String, Object> config = new HashMap<>();
         config.put("field", "field1");
         config.put("separator", "-");
-        String processorTag = randomAsciiOfLength(10);
+        String processorTag = randomAlphaOfLength(10);
         JoinProcessor joinProcessor = factory.create(null, processorTag, config);
         assertThat(joinProcessor.getTag(), equalTo(processorTag));
         assertThat(joinProcessor.getField(), equalTo("field1"));