diff --git a/spectrum/src/backend-logging.cfg b/spectrum/src/backend-logging.cfg
index fcdc906c8bd15387ebe6d4ff7d97cd98c2374b18..1078afe2d6385bcfe8a2f5d2f0a5bf82cd7580b0 100644
--- a/spectrum/src/backend-logging.cfg
+++ b/spectrum/src/backend-logging.cfg
@@ -1,11 +1,11 @@
 log4j.rootLogger=debug, R
 
 log4j.appender.R=org.apache.log4j.RollingFileAppender
-log4j.appender.R.File=/var/log/spectrum2/${jid}/backends/backend-${pid}.log
+log4j.appender.R.File=/var/log/spectrum2/${jid}/backends/backend-${id}.log
 
 log4j.appender.R.MaxFileSize=10000KB
 # Keep one backup file
 log4j.appender.R.MaxBackupIndex=1
 
 log4j.appender.R.layout=org.apache.log4j.PatternLayout
-log4j.appender.R.layout.ConversionPattern=%d %-5p %c: %m%n
+log4j.appender.R.layout.ConversionPattern=${pid}: %d %-5p %c: %m%n