diff --git a/lib/db/messages.php b/lib/db/messages.php
index d3473bba7e4..3ae3810c3d4 100644
--- a/lib/db/messages.php
+++ b/lib/db/messages.php
@@ -121,7 +121,8 @@ $messageproviders = array (
     // Message contact requests.
     'messagecontactrequests' => [
         'defaults' => [
-            'popup' => MESSAGE_PERMITTED + MESSAGE_DEFAULT_LOGGEDIN + MESSAGE_DEFAULT_LOGGEDOFF,
+            // We don't need to notify in the popup output here because the message drawer
+            // already notifies users of contact requests.
             'email' => MESSAGE_PERMITTED + MESSAGE_DEFAULT_LOGGEDOFF,
             'airnotifier' => MESSAGE_PERMITTED + MESSAGE_DEFAULT_LOGGEDIN + MESSAGE_DEFAULT_LOGGEDOFF,
         ]
diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index 048ae58cb56..0998df7e91f 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -3416,5 +3416,21 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2019070400.01);
     }
 
+    if ($oldversion < 2019071800.01) {
+        // Remove the "popup" processor from the list of default processors for the messagecontactrequests notification.
+        $oldloggedinconfig = get_config('message', 'message_provider_moodle_messagecontactrequests_loggedin');
+        $oldloggedoffconfig = get_config('message', 'message_provider_moodle_messagecontactrequests_loggedoff');
+        $newloggedinconfig = implode(',', array_filter(explode(',', $oldloggedinconfig), function($value) {
+            return $value != 'popup';
+        }));
+        $newloggedoffconfig = implode(',', array_filter(explode(',', $oldloggedoffconfig), function($value) {
+            return $value != 'popup';
+        }));
+        set_config('message_provider_moodle_messagecontactrequests_loggedin', $newloggedinconfig, 'message');
+        set_config('message_provider_moodle_messagecontactrequests_loggedoff', $newloggedoffconfig, 'message');
+
+        upgrade_main_savepoint(true, 2019071800.01);
+    }
+
     return true;
 }
diff --git a/version.php b/version.php
index 572c371c5b2..a3edfce2474 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2019071800.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2019071800.01;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.