diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index ff53ce7e6..57b9e9bad 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3209,7 +3209,7 @@ void GLCanvas3D::on_key(wxKeyEvent& evt)
                     // m_canvas->HandleAsNavigationKey(evt);   // XXX: Doesn't work in some cases / on Linux
                     post_event(SimpleEvent(EVT_GLCANVAS_TAB));
                 }
-                else if (keyCode == WXK_TAB && evt.ShiftDown()) {
+                else if (keyCode == WXK_TAB && evt.ShiftDown() && ! wxGetApp().is_gcode_viewer()) {
                     // Collapse side-panel with Shift+Tab
                     post_event(SimpleEvent(EVT_GLCANVAS_COLLAPSE_SIDEBAR));
                 }