diff --git a/README.md b/README.md
index 0f727c0..834faab 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 Gravity Forms: Multiple Form Instances
 =====================================
 
-### Version 1.0.11
+### Version 1.0.12
 
 -----
 
diff --git a/gravityforms-multiple-form-instances.php b/gravityforms-multiple-form-instances.php
index bfd4a53..a0449de 100644
--- a/gravityforms-multiple-form-instances.php
+++ b/gravityforms-multiple-form-instances.php
@@ -5,7 +5,7 @@
  * Author: tyxla
  * Author URI: http://marinatanasov.com/
  * Plugin URI: https://github.com/tyxla/Gravity-Forms-Multiple-Form-Instances
- * Version: 1.0.11
+ * Version: 1.0.12
  * License: GPL2
  * Requires at least: 3.0.1
  * Tested up to: 4.4
@@ -42,7 +42,7 @@ function __construct() {
 	function gform_get_form_filter($form_string, $form) {
 		// if form has been submitted, use the submitted ID, otherwise generate a new unique ID
 		if (isset($_POST['gform_random_id'])) {
-			$random_id = $_POST['gform_random_id'];
+			$random_id = absint( $_POST['gform_random_id'] );
 		} else {
 			$random_id = mt_rand();	
 		}
diff --git a/readme.txt b/readme.txt
index 7edd3c2..be6f198 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: tyxla
 Tags: gravity, form, multiple, gravity forms
 Requires at least: 3.0.1
 Tested up to: 4.4
-Stable tag: 1.0.11
+Stable tag: 1.0.12
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -25,6 +25,9 @@ This plugin addresses this issue, allowing multiple forms to be displayed on the
 
 == Changelog ==
 
+= 1.0.12 =
+Properly sanitizing the random form ID. Props @swissspidy.
+
 = 1.0.11 =
 Tested with WordPress 4.4.