diff --git a/includes/class-coblocks-form.php b/includes/class-coblocks-form.php
index 3c53289492c..09665836926 100644
--- a/includes/class-coblocks-form.php
+++ b/includes/class-coblocks-form.php
@@ -893,6 +893,12 @@ public function process_form_submission( $atts ) {
 
 		foreach ( $_POST as $key => $data ) {
 
+			if ( ! is_array( $data ) ) {
+
+				continue;
+
+			}
+
 			if ( is_array( $data['value'] ) ) {
 
 				$data['value'] = implode( ', ', $data['value'] );