diff --git a/Source/Source.FilterAPI.php b/Source/Source.FilterAPI.php
index 14881d1..13f78e8 100644
--- a/Source/Source.FilterAPI.php
+++ b/Source/Source.FilterAPI.php
@@ -371,7 +371,7 @@
 	}
 
 	if ( $p_array ) {
-		$t_input = gpc_get_string_array( $p_string, null );
+		$t_input = gpc_get_string_array( $p_string, array() );
 		$t_input_clean = array();
 
 		if ( is_array( $t_input ) && count( $t_input ) > 0 ) {