diff --git a/src/etc/inc/services.inc b/src/etc/inc/services.inc
index bd9bb53fb..c8b3b71b2 100644
--- a/src/etc/inc/services.inc
+++ b/src/etc/inc/services.inc
@@ -1465,6 +1465,7 @@ EOD;
 function services_dhcrelay_configure()
 {
     global $config;
+    $dhcrelayifs = array();
 
     /* kill any running dhcrelay */
     killbypid('/var/run/dhcrelay.pid');
@@ -1586,6 +1587,7 @@ function services_dhcrelay_configure()
 function services_dhcrelay6_configure()
 {
     global $config;
+    $dhcrelayifs = array();
 
     /* kill any running dhcrelay */
     killbypid('/var/run/dhcrelay6.pid');