diff --git a/src/Kaleidoscope/LED-Stalker.cpp b/src/Kaleidoscope/LED-Stalker.cpp
index db067099..10ec5486 100644
--- a/src/Kaleidoscope/LED-Stalker.cpp
+++ b/src/Kaleidoscope/LED-Stalker.cpp
@@ -39,6 +39,11 @@ namespace KaleidoscopePlugins {
       LEDMode::begin ();
     }
 
+    void
+    StalkerEffect::init (void) {
+      memset (map, 0, sizeof (map));
+    }
+
      Key
     StalkerEffect::eventHandlerHook (Key mappedKey, byte row, byte col, uint8_t keyState) {
       if (row >= ROWS || col >= COLS)
diff --git a/src/Kaleidoscope/LED-Stalker.h b/src/Kaleidoscope/LED-Stalker.h
index 0f6c41ac..fdbeace8 100644
--- a/src/Kaleidoscope/LED-Stalker.h
+++ b/src/Kaleidoscope/LED-Stalker.h
@@ -33,6 +33,7 @@ namespace KaleidoscopePlugins {
       StalkerEffect (void);
 
       virtual void begin (void) final;
+      virtual void init (void) final;
       virtual void update (void) final;
 
       static void configure (ColorComputer *colorComputer);