diff --git a/src/slic3r/GUI/GLCanvas3DManager.cpp b/src/slic3r/GUI/GLCanvas3DManager.cpp
index a4b45dd666..f275254271 100644
--- a/src/slic3r/GUI/GLCanvas3DManager.cpp
+++ b/src/slic3r/GUI/GLCanvas3DManager.cpp
@@ -207,7 +207,7 @@ GLCanvas3DManager::GLInfo GLCanvas3DManager::s_gl_info;
 bool GLCanvas3DManager::s_compressed_textures_supported = false;
 #if ENABLE_NON_STATIC_CANVAS_MANAGER
 GLCanvas3DManager::EMultisampleState GLCanvas3DManager::s_multisample = GLCanvas3DManager::EMultisampleState::Unknown;
-GLCanvas3DManager::EFramebufferType GLCanvas3DManager::s_framebuffers_type = GLCanvas3DManager::EFramebufferType::None;
+GLCanvas3DManager::EFramebufferType GLCanvas3DManager::s_framebuffers_type = GLCanvas3DManager::EFramebufferType::Unknown;
 #else
 GLCanvas3DManager::EMultisampleState GLCanvas3DManager::s_multisample = GLCanvas3DManager::MS_Unknown;
 GLCanvas3DManager::EFramebufferType GLCanvas3DManager::s_framebuffers_type = GLCanvas3DManager::FB_None;
@@ -337,7 +337,7 @@ void GLCanvas3DManager::init_gl()
         else if (GLEW_EXT_framebuffer_object)
             s_framebuffers_type = EFramebufferType::Ext;
         else
-            s_framebuffers_type = EFramebufferType::None;
+            s_framebuffers_type = EFramebufferType::Unknown;
 #else
         if (GLEW_ARB_framebuffer_object)
             s_framebuffers_type = FB_Arb;
diff --git a/src/slic3r/GUI/GLCanvas3DManager.hpp b/src/slic3r/GUI/GLCanvas3DManager.hpp
index ad27f13397..5f0c76cb73 100644
--- a/src/slic3r/GUI/GLCanvas3DManager.hpp
+++ b/src/slic3r/GUI/GLCanvas3DManager.hpp
@@ -35,7 +35,7 @@ public:
 #if ENABLE_NON_STATIC_CANVAS_MANAGER
     enum class EFramebufferType : unsigned char
     {
-        None,
+        Unknown,
         Arb,
         Ext
     };
@@ -182,7 +182,7 @@ public:
     static bool are_compressed_textures_supported() { return s_compressed_textures_supported; }
 #if ENABLE_NON_STATIC_CANVAS_MANAGER
     static bool can_multisample() { return s_multisample == EMultisampleState::Enabled; }
-    static bool are_framebuffers_supported() { return (s_framebuffers_type != EFramebufferType::None); }
+    static bool are_framebuffers_supported() { return (s_framebuffers_type != EFramebufferType::Unknown); }
 #else
     static bool can_multisample() { return s_multisample == MS_Enabled; }
     static bool are_framebuffers_supported() { return (s_framebuffers_type != FB_None); }
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 38ca03656c..b5a43b7d02 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2047,7 +2047,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
 
 #ifdef __APPLE__
     // set default view_toolbar icons size equal to GLGizmosManager::Default_Icons_Size
-    m_view_toolbar.set_icons_size(GLGizmosManager::Default_Icons_Size);
+    view_toolbar.set_icons_size(GLGizmosManager::Default_Icons_Size);
 #endif // __APPLE__
 #else
     view3D = new View3D(q, bed, camera, view_toolbar, &model, config, &background_process);