diff --git a/package/etc/conf.d/conflib/_splunk/splunkfields.conf.tmpl b/package/etc/conf.d/conflib/_splunk/splunkfields.conf.tmpl
index 56e3017..d5dddb1 100644
--- a/package/etc/conf.d/conflib/_splunk/splunkfields.conf.tmpl
+++ b/package/etc/conf.d/conflib/_splunk/splunkfields.conf.tmpl
@@ -36,7 +36,9 @@ rewrite r_set_splunk_default {
 #used by each log-path to set source and sourcetype which may be
 #overridden by user defined values
 block rewrite r_set_splunk_dest_default(
-                              source("${.splunk.source}")
+                              #While the following is not used it remains to prevent breaking changes in content
+                              index('')
+                              source("${.splunk.source}")                              
                               sourcetype()
                               template(`splunk-template`)
                            ) {