diff --git a/startup.script_common b/startup.script_common
index a48d5f0..2e7677b 100644
--- a/startup.script_common
+++ b/startup.script_common
@@ -53,8 +53,8 @@ dbQuietMacroWarnings=1
 # Start Logging
 putenv getenv("EPICS_IOC_LOG_INET") ? "" : "EPICS_IOC_LOG_INET=gfa-syslog"
 putenv getenv("EPICS_IOC_LOG_PORT") ? "" : "EPICS_IOC_LOG_PORT=1514"
-sprintf STRINGBUFFER, "putenv \"EPICS_CA_PUT_LOG_PREFIX=%s\"", IOC
-execute STRINGBUFFER
+sprintf STRINGBUFFER, "%s ", IOC
+iocLogPrefix STRINGBUFFER
 iocLogInit
 errlogPrintf "Starting EPICS %s\n", EPICS