diff --git a/samples/grid/griddemo.cpp b/samples/grid/griddemo.cpp
index 8c41f27e4b..ab25e4e7cb 100644
--- a/samples/grid/griddemo.cpp
+++ b/samples/grid/griddemo.cpp
@@ -2037,7 +2037,7 @@ wxString BugsGridTable::GetTypeName(int WXUNUSED(row), int col)
             return wxGRID_VALUE_NUMBER;
 
         case Col_Severity:
-            // fall through (TODO should be a list)
+            wxFALLTHROUGH;
 
         case Col_Summary:
             return wxString::Format("%s:80", wxGRID_VALUE_STRING);
diff --git a/samples/widgets/slider.cpp b/samples/widgets/slider.cpp
index fcfeb45ff3..bd30df106a 100644
--- a/samples/widgets/slider.cpp
+++ b/samples/widgets/slider.cpp
@@ -471,7 +471,6 @@ void SliderWidgetsPage::CreateSlider()
 
         default:
             wxFAIL_MSG("unexpected radiobox selection");
-            // fall through
     }
 
     if ( m_chkBothSides->GetValue() )