diff --git a/plugins/cyrus/cyrus-imapd b/plugins/cyrus/cyrus-imapd
index d765af6e..faaba8cc 100755
--- a/plugins/cyrus/cyrus-imapd
+++ b/plugins/cyrus/cyrus-imapd
@@ -69,7 +69,7 @@ GPLv2
 CONFIGDIR=$(awk -F : '/^configdirectory:/ { gsub(/ /, "", $2); print $2 }' /etc/imapd.conf 2> /dev/null)
 PROCDIR="${CONFIGDIR}/proc"
 
-if [ "$1" == "autoconf" ]; then
+if [ "$1" = "autoconf" ]; then
 	if [ "x${CONFIGDIR}x" != "xx" ] && [ -d ${PROCDIR} ]; then
 		echo yes
 	else
@@ -79,14 +79,14 @@ if [ "$1" == "autoconf" ]; then
 fi
 
 # Check if we actually got some sensible data
-if [ "x${CONFIGDIR}x" == "xx" ]; then
+if [ "x${CONFIGDIR}x" = "xx" ]; then
 	exit 1
 fi
 
 # If run with the "config"-parameter, give out information on how the
 # graphs should look. 
  
-if [ "$1" == "config" ]; then
+if [ "$1" = "config" ]; then
 	echo 'graph_title Cyrus IMAPd Load'
 	echo 'graph_args --base 1000 -l 0'
 	echo 'graph_vlabel connections'