diff --git a/secure/fax_to_email.php b/secure/fax_to_email.php
index 3ab010cf15..3a28476882 100644
--- a/secure/fax_to_email.php
+++ b/secure/fax_to_email.php
@@ -473,12 +473,12 @@ if(!function_exists('fax_split_dtmf')) {
 			if (count($route_array) == 0) {
 				//send the internal call to the registered extension
 					$fax_uri = "user/".$fax_forward_number."@".$domain_name;
-					$t38 = "";
+					$fax_variables = "";
 			}
 			else {
 				//send the external call
 					$fax_uri = $route_array[0];
-					$t38 = "fax_enable_t38=true,fax_enable_t38_request=true";
+					$fax_variables = "fax_enable_t38=true,fax_enable_t38_request=true";
 			}
 
 			$common_dial_string  = "absolute_codec_string='PCMU,PCMA',";
@@ -493,7 +493,7 @@ if(!function_exists('fax_split_dtmf')) {
 			$common_dial_string .= "fax_file='"                     . $fax_file                . "',";
 
 			if ($fax_send_mode != 'queue') {
-				$dial_string .= $t38;
+				$dial_string .= $fax_variables;
 				$dial_string .= "mailto_address='"     . $mailto_address   . "',";
 				$dial_string .= "mailfrom_address='"   . $mailfrom_address . "',";
 				$dial_string .= "fax_uri=" . $fax_uri  . ",";