diff --git a/zabbix.pl b/zabbix.pl
index fd14320..f05eaec 100644
--- a/zabbix.pl
+++ b/zabbix.pl
@@ -8,7 +8,7 @@ use JSON;
 # We need to switch to backuppc UID/GID
 my $uid = getuid();
 my $gid = getgid();
-my (undef,undef,$bkpuid,$bkpgid) = getpwnam(‘backuppc’);
+my (undef,undef,$bkpuid,$bkpgid) = getpwnam('backuppc');
 setuid($bkpuid) if ($uid ne $bkpuid);
 setgid($bkpgid) if ($gid ne $bkpgid);
 
@@ -56,22 +56,22 @@ else {
 }
 $lastXferErrors = $backups[@backups-1]{xferErrs} if ( @backups );
 $maxErrors = $conf->{MaxXferError} if (defined $conf->{MaxXferError});
-if ($what eq ‘errors’){
+if ($what eq 'errors'){
     print $lastXferErrors;
 }
-elsif ($what eq ‘max_errors’){
+elsif ($what eq 'max_errors'){
     print $maxErrors;
 }
-elsif ($what eq ‘age’){
+elsif ($what eq 'age'){
     print $lastAge;
 }
-elsif ($what eq ‘size’){
+elsif ($what eq 'size'){
     print $fullSize;
 }
-elsif ($what eq ‘duration’){
+elsif ($what eq 'duration'){
     print $fullDur;
 }
-elsif ($what eq ‘notify’){
+elsif ($what eq 'notify'){
     print $conf->{EMailNotifyOldBackupDays};
 }
 else{