diff --git a/lib/TemplateRender.php b/lib/TemplateRender.php
index bf6e99d..249c7a1 100644
--- a/lib/TemplateRender.php
+++ b/lib/TemplateRender.php
@@ -200,7 +200,7 @@ class TemplateRender extends PageRender {
 					$next_number = $vals;
 
 					foreach ($mod as $calc) {
-						$operand = $calc{0};
+						$operand = $calc[0];
 						$operator = substr ($calc,1);
 
 						switch ($operand) {
diff --git a/lib/export_functions.php b/lib/export_functions.php
index d98df2c..7f08b87 100644
--- a/lib/export_functions.php
+++ b/lib/export_functions.php
@@ -223,7 +223,7 @@ abstract class Export {
 	 */
 	protected function isSafeAscii($str) {
 		for ($i=0;$i<strlen($str);$i++)
-			if (ord($str{$i}) < 32 || ord($str{$i}) > 127)
+			if (ord($str[$i]) < 32 || ord($str[$i]) > 127)
 				return false;
 
 		return true;
diff --git a/lib/functions.php b/lib/functions.php
index 784efc9..a16648c 100644
--- a/lib/functions.php
+++ b/lib/functions.php
@@ -1638,7 +1638,7 @@ function get_icon($server_id,$dn,$object_classes=array()) {
 
 	# Return icon filename based upon objectClass value
 	if (in_array('sambaaccount',$object_classes) &&
-		'$' == $rdn{ strlen($rdn) - 1 })
+		'$' == $rdn[ strlen($rdn) - 1 ])
 		return 'nt_machine.png';
 
 	if (in_array('sambaaccount',$object_classes))