diff --git a/lib/Config/PopulatorData/Templates/NewsletterBlank121Column.php b/lib/Config/PopulatorData/Templates/NewsletterBlank121Column.php
index bffbf000ef..3ae36b2633 100644
--- a/lib/Config/PopulatorData/Templates/NewsletterBlank121Column.php
+++ b/lib/Config/PopulatorData/Templates/NewsletterBlank121Column.php
@@ -7,7 +7,7 @@ class NewsletterBlank121Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-2-1-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-2-1-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/NewsletterBlank12Column.php b/lib/Config/PopulatorData/Templates/NewsletterBlank12Column.php
index 16dd554989..5625d99b3c 100644
--- a/lib/Config/PopulatorData/Templates/NewsletterBlank12Column.php
+++ b/lib/Config/PopulatorData/Templates/NewsletterBlank12Column.php
@@ -7,7 +7,7 @@ class NewsletterBlank12Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-2-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-2-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/NewsletterBlank13Column.php b/lib/Config/PopulatorData/Templates/NewsletterBlank13Column.php
index 7f0939c084..e7118670cf 100644
--- a/lib/Config/PopulatorData/Templates/NewsletterBlank13Column.php
+++ b/lib/Config/PopulatorData/Templates/NewsletterBlank13Column.php
@@ -7,7 +7,7 @@ class NewsletterBlank13Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-3-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-3-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/NewsletterBlank1Column.php b/lib/Config/PopulatorData/Templates/NewsletterBlank1Column.php
index 3ce4396175..70fb65767e 100644
--- a/lib/Config/PopulatorData/Templates/NewsletterBlank1Column.php
+++ b/lib/Config/PopulatorData/Templates/NewsletterBlank1Column.php
@@ -7,7 +7,7 @@ class NewsletterBlank1Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/newsletter-blank-1-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/PostNotificationsBlank1Column.php b/lib/Config/PopulatorData/Templates/PostNotificationsBlank1Column.php
index b7c295385a..02aeef76b0 100644
--- a/lib/Config/PopulatorData/Templates/PostNotificationsBlank1Column.php
+++ b/lib/Config/PopulatorData/Templates/PostNotificationsBlank1Column.php
@@ -7,7 +7,7 @@ class PostNotificationsBlank1Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/post-notifications-blank-1-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/post-notifications-blank-1-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/SimpleText.php b/lib/Config/PopulatorData/Templates/SimpleText.php
index 5bddcce19d..245562cef3 100644
--- a/lib/Config/PopulatorData/Templates/SimpleText.php
+++ b/lib/Config/PopulatorData/Templates/SimpleText.php
@@ -7,7 +7,7 @@ class SimpleText {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/simple-text';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/simple-text';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/WelcomeBlank12Column.php b/lib/Config/PopulatorData/Templates/WelcomeBlank12Column.php
index 72b8fa7b49..afd620706b 100644
--- a/lib/Config/PopulatorData/Templates/WelcomeBlank12Column.php
+++ b/lib/Config/PopulatorData/Templates/WelcomeBlank12Column.php
@@ -7,7 +7,7 @@ class WelcomeBlank12Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/welcome-email-blank-1-2-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/welcome-email-blank-1-2-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }
diff --git a/lib/Config/PopulatorData/Templates/WelcomeBlank1Column.php b/lib/Config/PopulatorData/Templates/WelcomeBlank1Column.php
index 51281ec0c0..f35ba6f133 100644
--- a/lib/Config/PopulatorData/Templates/WelcomeBlank1Column.php
+++ b/lib/Config/PopulatorData/Templates/WelcomeBlank1Column.php
@@ -7,7 +7,7 @@ class WelcomeBlank1Column {
 
   function __construct($assets_url) {
     $this->assets_url = $assets_url;
-    $this->external_template_image_url = '//ps.w.org/mailpoet/assets/newsletter-templates/welcome-email-blank-1-column';
+    $this->external_template_image_url = 'https://ps.w.org/mailpoet/assets/newsletter-templates/welcome-email-blank-1-column';
     $this->template_image_url = $this->assets_url . '/img/blank_templates';
     $this->social_icon_url = $this->assets_url . '/img/newsletter_editor/social-icons';
   }