diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
index 00bfd8ceb..43169df10 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
@@ -147,7 +147,7 @@ void GLGizmoSimplify::add_simplify_suggestion_notification(
     for (size_t object_id : big_ids) {
         std::string t = GUI::format(_L(
             "Processing model '%1%' with more than 1M triangles "
-            "could be slow. It is highly recommend to reduce "
+            "could be slow. It is highly recommended to reduce "
             "amount of triangles."), objects[object_id]->name);
         std::string hypertext = _u8L("Simplify model");