diff --git a/src/Kaleidoscope/TopsyTurvy.h b/src/Kaleidoscope/TopsyTurvy.h
index 048debc3..3422b2cd 100644
--- a/src/Kaleidoscope/TopsyTurvy.h
+++ b/src/Kaleidoscope/TopsyTurvy.h
@@ -25,7 +25,7 @@
 
 namespace kaleidoscope {
 
-class TopsyTurvy: public KaleidoscopePlugin {
+class TopsyTurvy: public kaleidoscope::Plugin {
  public:
   TopsyTurvy(void) {}