diff --git a/include/surfaceflinger/ISurfaceComposer.h b/include/surfaceflinger/ISurfaceComposer.h
index 1a1821c..de447be 100644
--- a/include/surfaceflinger/ISurfaceComposer.h
+++ b/include/surfaceflinger/ISurfaceComposer.h
@@ -119,6 +119,7 @@
             uint32_t reqWidth, uint32_t reqHeight) = 0;
 
     virtual status_t turnElectronBeamOff(int32_t mode) = 0;
+    virtual status_t turnElectronBeamOn(int32_t mode) = 0;
 
     /* Signal surfaceflinger that there might be some work to do
      * This is an ASYNCHRONOUS call.
@@ -145,7 +146,8 @@
         UNFREEZE_DISPLAY,
         SIGNAL,
         CAPTURE_SCREEN,
-        TURN_ELECTRON_BEAM_OFF
+        TURN_ELECTRON_BEAM_OFF,
+        TURN_ELECTRON_BEAM_ON
     };
 
     virtual status_t    onTransact( uint32_t code,