diff --git a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
index 861a41c7c..6e1922a16 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
@@ -653,7 +653,6 @@ void GLGizmoEmboss::initialize()
     // make size pair number
     if (cfg.icon_width % 2 != 0) ++cfg.icon_width;
 
-    float icon_width_with_spacing = cfg.icon_width + space;
     cfg.delete_pos_x = cfg.max_font_name_width + space;
     int count_line_of_text = 3;
     cfg.text_size = ImVec2(-FLT_MIN, line_height_with_spacing * count_line_of_text);
@@ -1378,7 +1377,7 @@ void GLGizmoEmboss::draw_font_list()
                 }
             }
             if (ImGui::IsItemHovered())
-                ImGui::SetTooltip(face_name.ToUTF8().data());
+                ImGui::SetTooltip("%s", face_name.ToUTF8().data());
             if (is_selected) ImGui::SetItemDefaultFocus();
             if (!m_face_names.exist_textures[index] && 
                 ImGui::IsItemVisible()) {
diff --git a/src/slic3r/GUI/Jobs/CreateFontNameImageJob.hpp b/src/slic3r/GUI/Jobs/CreateFontNameImageJob.hpp
index 1e380fc6d..7ea6fe0e7 100644
--- a/src/slic3r/GUI/Jobs/CreateFontNameImageJob.hpp
+++ b/src/slic3r/GUI/Jobs/CreateFontNameImageJob.hpp
@@ -35,7 +35,7 @@ struct FontImageData
 
     // texture meta data
     GLenum format = GL_ALPHA, type = GL_UNSIGNED_BYTE;
-    GLint  level = 0, border = 0;
+    GLint  level = 0;
 };
 
 /// <summary>
@@ -59,7 +59,7 @@ public:
     /// </summary>
     /// <param name="canceled"></param>
     /// <param name=""></param>
-    void finalize(bool canceled, std::exception_ptr &);
+    void finalize(bool canceled, std::exception_ptr &) override;
 };
 
 } // namespace Slic3r::GUI