diff --git a/src/test7/java/com/dynatrace/openkit/protocol/HTTPClientTest.java b/src/test7/java/com/dynatrace/openkit/protocol/HTTPClientTest.java
index 5fd9f86c..e5730a04 100644
--- a/src/test7/java/com/dynatrace/openkit/protocol/HTTPClientTest.java
+++ b/src/test7/java/com/dynatrace/openkit/protocol/HTTPClientTest.java
@@ -382,7 +382,8 @@ public void sendBeaconRequestAndEnsureContentLengthIsLengthOfCompressedSize() th
 
         // ensure that Content-Type and Content-Length were set
         verify(connection, times(1)).setRequestProperty("Content-Encoding", "gzip");
-        verify(connection, times(1)).setRequestProperty("Content-Length", Integer.toString(compressedText.length));
+        verify(connection, times(1)).setRequestProperty("Content-Type", "text/plain; charset=utf-8");
+        verify(connection, times(1)).setFixedLengthStreamingMode(compressedText.length);
 
         // ensure that the message body is as expected
         assertThat(os.toByteArray(), is(equalTo(compressedText)));