diff --git a/docs/changed_files-v1-5-5.html b/docs/changed_files-v1-5-5.html
index f71c999ae3..6b644fc7a9 100644
--- a/docs/changed_files-v1-5-5.html
+++ b/docs/changed_files-v1-5-5.html
@@ -112,6 +112,7 @@ <h1 class="intro center">Version 1.5.5b (changes since v1.5.5a)</h1>
 <li>/includes/modules/payment/authorizenet_echeck.php</li>
 <li>/includes/modules/payment/payeezyjszc.php</li>
 <li>/includes/modules/payment/paypalwpp.php</li>
+<li>/includes/modules/payment/paypal/paypal_functions.php</li>
 <li>/includes/modules/checkout_process.php</li>
 <li>/includes/templates/responsive_classic/jscript/jscript_responsive_framework.php</li>
 <li>/includes/templates/responsive_classic/common/html_header.php</li>
diff --git a/docs/whatsnew_1.5.5.html b/docs/whatsnew_1.5.5.html
index 1c374348b8..d755061a43 100644
--- a/docs/whatsnew_1.5.5.html
+++ b/docs/whatsnew_1.5.5.html
@@ -170,6 +170,7 @@ <h3>Since the release of v1.5.5a on 5-May-2016, the following changes have been
 <li>Multilanguage: make hreflang tag appear for all languages, instead of only for "other than current" language</li>
 <li>Fix admin link to whois resource</li>
 <li>Fix checkout_shipping: No method chosen after cart goes from virtual to mixed</li>
+<li>Handle mysql strict typing issue with legacy PayPal IPN insert</li>
 </ul>
 
 <h1>v1.5.5a vs v1.5.5</h1>
diff --git a/includes/modules/payment/paypal/paypal_functions.php b/includes/modules/payment/paypal/paypal_functions.php
index 761ee4d02b..f4a2931da7 100644
--- a/includes/modules/payment/paypal/paypal_functions.php
+++ b/includes/modules/payment/paypal/paypal_functions.php
@@ -650,7 +650,7 @@ function ipn_update_orders_status_and_history($ordersID, $new_status = 1, $txn_t
                             'orders_status_id' => (int)$new_status,
                             'date_added' => 'now()',
                             'comments' => 'PayPal status: ' . $_POST['payment_status'] . ' ' . ' @ ' . $_POST['payment_date'] . (($_POST['parent_txn_id'] !='') ? "\n" . ' Parent Trans ID:' . $_POST['parent_txn_id'] : '') . "\n" . ' Trans ID:' . $_POST['txn_id'] . "\n" . ' Amount: ' . $_POST['mc_gross'] . ' ' . $_POST['mc_currency'],
-                            'customer_notified' => false
+                            'customer_notified' => (int)false,
                            );
     zen_db_perform(TABLE_ORDERS_STATUS_HISTORY, $sql_data_array);
     ipn_debug_email('IPN NOTICE :: Update complete.');