diff --git a/make/photon/log/rsyslog.conf b/make/photon/log/rsyslog.conf
index 1b512eaf5..77e0f217f 100644
--- a/make/photon/log/rsyslog.conf
+++ b/make/photon/log/rsyslog.conf
@@ -5,6 +5,9 @@
 #
 #  Default logging rules can be found in /etc/rsyslog.d/50-default.conf
 
+# The default value is 8k. When the size of one log line > 8k, the line
+# is truncated and causes mess in log file directory
+$MaxMessageSize 32k
 
 #################
 #### MODULES ####