diff --git a/classes/class-get-portfolio.php b/classes/class-get-portfolio.php
index ab1ad149..92bbfa55 100644
--- a/classes/class-get-portfolio.php
+++ b/classes/class-get-portfolio.php
@@ -1215,10 +1215,12 @@ public static function sort_array_by_field( $array, $field, $order = 'desc' ) {
 			$array,
 			function ( $a, $b ) use ( $field, $order ) {
 				// Primary comparison by field values.
-				$comparsion = 'asc' === $order ? strcmp( $a[ $field ], $b[ $field ] ) : strcmp( $b[ $field ], $a[ $field ] );
+				if ( isset( $a[ $field ] ) && isset( $b[ $field ] ) ) {
+					$comparsion = 'asc' === $order ? strcmp( $a[ $field ], $b[ $field ] ) : strcmp( $b[ $field ], $a[ $field ] );
 
-				if ( 0 !== $comparsion ) {
-					return $comparsion;
+					if ( 0 !== $comparsion ) {
+						return $comparsion;
+					}
 				}
 
 				// Secondary comparison by keys when values are equal.