2 files changed, 3 insertions, 3 deletions
diff --git a/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceSettingsTests.java b/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceSettingsTests.java
index dc374f1333..48817e52d5 100644
--- a/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceSettingsTests.java
+++ b/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceSettingsTests.java
@@ -55,7 +55,7 @@ public class JvmGcMonitorServiceSettingsTests extends ESTestCase {
     }
 
     public void testNegativeSetting() throws InterruptedException {
-        String collector = randomAsciiOfLength(5);
+        String collector = randomAlphaOfLength(5);
         Settings settings = Settings.builder().put("monitor.jvm.gc.collector." + collector + ".warn", "-" + randomTimeValue()).build();
         execute(settings, (command, interval, name) -> null, e -> {
             assertThat(e, instanceOf(IllegalArgumentException.class));
@@ -64,7 +64,7 @@ public class JvmGcMonitorServiceSettingsTests extends ESTestCase {
     }
 
     public void testMissingSetting() throws InterruptedException {
-        String collector = randomAsciiOfLength(5);
+        String collector = randomAlphaOfLength(5);
         Set<AbstractMap.SimpleEntry<String, String>> entries = new HashSet<>();
         entries.add(new AbstractMap.SimpleEntry<>("monitor.jvm.gc.collector." + collector + ".warn", randomPositiveTimeValue()));
         entries.add(new AbstractMap.SimpleEntry<>("monitor.jvm.gc.collector." + collector + ".info", randomPositiveTimeValue()));
diff --git a/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceTests.java b/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceTests.java
index ca3a1d7070..711988d5a8 100644
--- a/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceTests.java
+++ b/core/src/test/java/org/elasticsearch/monitor/jvm/JvmGcMonitorServiceTests.java
@@ -37,7 +37,7 @@ public class JvmGcMonitorServiceTests extends ESTestCase {
         when(logger.isInfoEnabled()).thenReturn(true);
         when(logger.isDebugEnabled()).thenReturn(true);
         final JvmGcMonitorService.JvmMonitor.Threshold threshold = randomFrom(JvmGcMonitorService.JvmMonitor.Threshold.values());
-        final String name = randomAsciiOfLength(16);
+        final String name = randomAlphaOfLength(16);
         final long seq = randomIntBetween(1, 1 << 30);
         final int elapsedValue = randomIntBetween(1, 1 << 10);
         final long totalCollectionCount = randomIntBetween(1, 16);