diff --git a/tempest/common/rest_client.py b/tempest/common/rest_client.py
index c290dad..6f2e1bd 100644
--- a/tempest/common/rest_client.py
+++ b/tempest/common/rest_client.py
@@ -42,7 +42,7 @@
 
 
 # convert a structure into a string safely
-def safe_body(body, maxlen=2048):
+def safe_body(body, maxlen=4096):
     try:
         text = six.text_type(body)
     except UnicodeDecodeError: