diff --git a/src/Kaleidoscope/Syster.cpp b/src/Kaleidoscope/Syster.cpp
index d511fb41..f729bc25 100644
--- a/src/Kaleidoscope/Syster.cpp
+++ b/src/Kaleidoscope/Syster.cpp
@@ -18,7 +18,7 @@
 
 #include <Kaleidoscope-Syster.h>
 
-using namespace KaleidoscopePlugins::Ranges;
+using KaleidoscopePlugins::Ranges;
 
 namespace KaleidoscopePlugins {
 // --- state ---
diff --git a/src/Kaleidoscope/Syster.h b/src/Kaleidoscope/Syster.h
index a398d40c..83c420df 100644
--- a/src/Kaleidoscope/Syster.h
+++ b/src/Kaleidoscope/Syster.h
@@ -36,7 +36,7 @@ class Syster : public KaleidoscopePlugin {
 
     Syster (void);
 
-    virtual void begin (void) final;
+    void begin (void) final;
     static void reset (void);
 
   private: