diff --git a/main/client/test/src/mill/main/client/ClientTests.java b/main/client/test/src/mill/main/client/ClientTests.java
index 7d810cdbd98..0466db7e2ec 100644
--- a/main/client/test/src/mill/main/client/ClientTests.java
+++ b/main/client/test/src/mill/main/client/ClientTests.java
@@ -61,7 +61,7 @@ public void checkStringRoundTrip(String example) throws Exception{
         Util.writeString(o, example);
         ByteArrayInputStream i = new ByteArrayInputStream(o.toByteArray());
         String s = Util.readString(i);
-        assertEquals(example, s, "String as bytes: ["+example.getBytes()+"] differs from expected: ["+s.getBytes()+"]");
+        assertEquals(example, s);
         assertEquals(i.available(), 0);
     }