diff --git a/postfix_mailqueue b/postfix_mailqueue
index 3e3b11c..d4d2249 100755
--- a/postfix_mailqueue
+++ b/postfix_mailqueue
@@ -79,7 +79,6 @@ munin-node.
 =cut
 
 MAILLOG="/var/log/mail.log"
-SYSLOG5MINS="/opt/syslog5mins"
 
 # atempt to get spooldir via postconf, but environment overrides.
 
@@ -89,16 +88,30 @@ SPOOLDIR=${spooldir:-$POSTCONFSPOOL}
 
 . $MUNIN_LIBDIR/plugins/plugin.sh
 
+syslog5mins() {
+	#for (( i = 4; i >= 0; i-- )) ; do
+	for i in 4 3 2 1 0; do
+		# In %_d the underscore is important since it demands `date`
+		# to pad with spaces (like syslog for e.g. "Jan  1" to "Jan  9")
+		# instead of zeros.
+		dstring=`LANG=C date -d "-$i min" +"%b %_d %R"`
+		#echo "Entries for '$dstring':"
+		grep "^$dstring:.. " $1
+	done
+}
+
+# main logic
+
 case $1 in
     autoconf|detect)
-	
 	if [ -d $SPOOLDIR ] ; then
 	    echo yes
 	    exit 0
         else
 	    echo "no (spooldir not found)"
 	    exit 0
-        fi;;
+    fi;;
+
     config)
 	cat <<'EOF'
 graph_title Postfix Mailqueue
@@ -130,10 +143,10 @@ cd $SPOOLDIR >/dev/null 2>/dev/null || {
 }
 
 cat <<EOF
-outgoing.value `$SYSLOG5MINS $MAILLOG | grep "postfix/smtp\[.*status=sent" | wc -l`
+outgoing.value `syslog5mins $MAILLOG | grep "postfix/smtp\[.*status=sent" | wc -l`
 deferred.value `(test -d deferred && find deferred -type f ) | wc -l`
 maildrop.value `(test -d maildrop && find maildrop -type f ) | wc -l`
-incoming.value `$SYSLOG5MINS $MAILLOG | grep "postfix/pipe\[.*status=sent" | wc -l`
+incoming.value `syslog5mins $MAILLOG | grep "postfix/pipe\[.*status=sent" | wc -l`
 corrupt.value `(test -d corrupt && find corrupt -type f ) | wc -l`
 hold.value `( test -d hold && find hold -type f ) | wc -l`
 EOF
diff --git a/syslog5mins b/syslog5mins
deleted file mode 100755
index 320e2b7..0000000
--- a/syslog5mins
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-if [ "$1" == "" ]; then
-	echo "No file given!"
-	exit 1
-fi
-
-for (( i = 4; i >= 0; i-- )) ; do
-	# In %_d the underscore is important since it demands `date`
-	# to pad with spaces (like syslog for e.g. "Jan  1" to "Jan  9")
-	# instead of zeros.
-	dstring=`LANG=C date -d "-$i min" +"%b %_d %R"`
-	#echo "Entries for '$dstring':"
-	grep "^$dstring:.. " $1
-done