diff --git a/payment/uc_payment/uc_payment.admin.inc b/payment/uc_payment/uc_payment.admin.inc
index 7eb7835a..d27b966d 100644
--- a/payment/uc_payment/uc_payment.admin.inc
+++ b/payment/uc_payment/uc_payment.admin.inc
@@ -142,7 +142,7 @@ function uc_payment_by_order_form($form, &$form_state, $order) {
   if ($payments !== FALSE) {
     foreach ($payments as $payment) {
       $form['payments'][$payment->receipt_id]['received'] = array(
-        '#markup' => format_date($payment->received, 'custom', config_get('uc_store.settings', 'date_format_uc_store') . '<b\r />H:i:s'),
+        '#markup' => format_date($payment->received, 'custom', config_get('system.date', 'formats.uc_store.pattern') . '<b\r />H:i:s'),
       );
       $form['payments'][$payment->receipt_id]['user'] = array(
         '#markup' => theme('uc_uid', array('uid' => $payment->uid)),
diff --git a/uc_reports/uc_reports.admin.inc b/uc_reports/uc_reports.admin.inc
index b9e06dfa..2ddc5a43 100644
--- a/uc_reports/uc_reports.admin.inc
+++ b/uc_reports/uc_reports.admin.inc
@@ -1290,7 +1290,7 @@ function uc_reports_sales_custom() {
 
     // Create the date title for the subreport.
     if ($args['length'] == 'day') {
-      $date = format_date($subreport['start'], 'custom', config_get('uc_store.settings', 'date_format_uc_store') . ' - D');
+      $date = format_date($subreport['start'], 'custom', config_get('system.date', 'formats.uc_store.pattern') . ' - D');
     }
     else {
       $date = format_date($subreport['start'], 'uc_store') . ' - ' . format_date($subreport['end'], 'uc_store');
diff --git a/uc_store/config/uc_store.settings.json b/uc_store/config/uc_store.settings.json
index 64261890..589773bd 100644
--- a/uc_store/config/uc_store.settings.json
+++ b/uc_store/config/uc_store.settings.json
@@ -1,6 +1,5 @@
 {
     "_config_name": "uc_store.settings",
-    "date_format_uc_store": "m/d/Y",
     "uc_store_country": 840,
     "uc_store_owner": "",
     "uc_store_email_include_name": true,
diff --git a/uc_store/uc_store.install b/uc_store/uc_store.install
index 4cca2dfd..7e19e5a7 100644
--- a/uc_store/uc_store.install
+++ b/uc_store/uc_store.install
@@ -156,6 +156,90 @@ function uc_store_install() {
   _uc_store_add_footer_blocks();
 }
 
+/**
+ * Implements hook_disable().
+ */
+function uc_store_disable() {
+  // Remove the footer block from all existing layouts.
+  _uc_store_remove_footer_blocks();
+}
+
+/**
+ * Implements hook_uninstall().
+ */
+function uc_store_uninstall() {
+  // Unset mail handler for all Ubercart modules.
+  $config = config('system.mail');
+  $config->clear('uc_cart');
+  $config->clear('uc_order');
+  $config->clear('uc_file');
+  $config->clear('uc_roles');
+  $config->clear('uc_stock');
+  $config->clear('uc_store');
+  $config->save();
+}
+
+/**
+ * Add the Ubercart footer block to the bottom of relevant layouts using the
+ * specified footer message.
+ */
+function _uc_store_add_footer_blocks($footer_message = 0) {
+  $layouts = layout_load_all();
+  foreach ($layouts as $name => $layout) {
+    // Only consider default layouts and any layout whose path is 'node/%'
+    // (which could be a product node).
+    if (!in_array($name, array('default', 'admin_default')) && $layout->getPath() != 'node/%') {
+      continue;
+    }
+
+    // Try to find the appropriate region for each layout. If there's no footer
+    // or bottom region, then skip this layout.
+    $regions = $layout->positions;
+    if (isset($regions['footer'])) {
+      $region = 'footer';
+    }
+    elseif (isset($regions['bottom'])) {
+      $region = 'bottom';
+    }
+    else {
+      continue;
+    }
+
+    // Check whether there's already a UcBlockFooter in this layout. If there
+    // is, then we won't add another one.
+    foreach ($layout->content as $block) {
+      if (get_class($block) == 'UcBlockFooter') {
+        continue 2;
+      }
+    }
+
+    // Add our block to the layout.
+    $block = $layout->addBlock('uc_store', 'uc_store_footer', $region);
+    $block->settings['uc_footer_message'] = $footer_message;
+
+    // Add our visibility condition to the block.
+    $handler = layout_create_handler('layout_access', 'uc_store_path');
+    $block->conditions[] = $handler;
+
+    $layout->save();
+  }
+}
+
+/**
+ * Remove the Ubercart footer block from all layouts.
+ */
+function _uc_store_remove_footer_blocks() {
+  $layouts = layout_load_all();
+  foreach ($layouts as $layout) {
+    foreach ($layout->content as $uuid => $block) {
+      if (get_class($block) == 'UcBlockFooter') {
+        $layout->removeBlock($uuid);
+      }
+    }
+    $layout->save();
+  }
+}
+
 /**
  * Implements hook_update_last_removed().
  */
@@ -317,85 +401,17 @@ function uc_store_update_1002() {
 }
 
 /**
- * Implements hook_disable().
- */
-function uc_store_disable() {
-  // Remove the footer block from all existing layouts.
-  _uc_store_remove_footer_blocks();
-}
-
-/**
- * Implements hook_uninstall().
- */
-function uc_store_uninstall() {
-  // Unset mail handler for all Ubercart modules.
-  $config = config('system.mail');
-  $config->clear('uc_cart');
-  $config->clear('uc_order');
-  $config->clear('uc_file');
-  $config->clear('uc_roles');
-  $config->clear('uc_stock');
-  $config->clear('uc_store');
-  $config->save();
-}
-
-/**
- * Add the Ubercart footer block to the bottom of relevant layouts using the
- * specified footer message.
- */
-function _uc_store_add_footer_blocks($footer_message = 0) {
-  $layouts = layout_load_all();
-  foreach ($layouts as $name => $layout) {
-    // Only consider default layouts and any layout whose path is 'node/%'
-    // (which could be a product node).
-    if (!in_array($name, array('default', 'admin_default')) && $layout->getPath() != 'node/%') {
-      continue;
-    }
-
-    // Try to find the appropriate region for each layout. If there's no footer
-    // or bottom region, then skip this layout.
-    $regions = $layout->positions;
-    if (isset($regions['footer'])) {
-      $region = 'footer';
-    }
-    elseif (isset($regions['bottom'])) {
-      $region = 'bottom';
-    }
-    else {
-      continue;
-    }
-
-    // Check whether there's already a UcBlockFooter in this layout. If there
-    // is, then we won't add another one.
-    foreach ($layout->content as $block) {
-      if (get_class($block) == 'UcBlockFooter') {
-        continue 2;
-      }
-    }
-
-    // Add our block to the layout.
-    $block = $layout->addBlock('uc_store', 'uc_store_footer', $region);
-    $block->settings['uc_footer_message'] = $footer_message;
-
-    // Add our visibility condition to the block.
-    $handler = layout_create_handler('layout_access', 'uc_store_path');
-    $block->conditions[] = $handler;
-
-    $layout->save();
-  }
-}
-
-/**
- * Remove the Ubercart footer block from all layouts.
+ * Store date format in date system config.
  */
-function _uc_store_remove_footer_blocks() {
-  $layouts = layout_load_all();
-  foreach ($layouts as $layout) {
-    foreach ($layout->content as $uuid => $block) {
-      if (get_class($block) == 'UcBlockFooter') {
-        $layout->removeBlock($uuid);
-      }
-    }
-    $layout->save();
-  }
+function uc_store_update_1003() {
+  $date_format = config_get('uc_store.settings', 'date_format_uc_store');
+  // @todo delete date_format_uc_store when its easier to make a breaking
+  // change.
+  $date_config = config('system.date');
+  $date_config->set('formats.' . 'uc_store', array(
+    'label' => 'Ubercart Store',
+    'pattern' => $date_format,
+    'module' => 'uc_store',
+  ));
+  $date_config->save();
 }