diff --git a/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/edit/form.phtml b/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/edit/form.phtml
index 71d0a48dd8fed..8d2f762d8160c 100644
--- a/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/edit/form.phtml
+++ b/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/edit/form.phtml
@@ -54,7 +54,7 @@ $categoryId = $block->getCategoryId();
 
 <div data-id="information-dialog-category" class="messages admin__scope" style="display: none;">
     <div class="message message-notice">
-        <div><?php echo __('This operation can take much time'); ?></div>
+        <div><?php echo __('This operation can take a long time'); ?></div>
     </div>
 </div>
 
diff --git a/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/tree.phtml b/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/tree.phtml
index 26731afb65e18..58fa76afac0d4 100644
--- a/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/tree.phtml
+++ b/app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/tree.phtml
@@ -32,7 +32,7 @@
 
 <div data-id="information-dialog-tree" class="messages admin__scope" style="display: none;">
     <div class="message message-notice">
-       <div><?php echo __('This operation can take much time'); ?></div>
+       <div><?php echo __('This operation can take a long time'); ?></div>
     </div>
 </div>
 <!--[if IE]>