diff --git a/src/effect_twirl.cpp b/src/effect_twirl.cpp
index 794b324..32396ba 100644
--- a/src/effect_twirl.cpp
+++ b/src/effect_twirl.cpp
@@ -2,7 +2,7 @@
 #include "functions.h"
 
 boolean TwirlEffect::can_be_shown_with_clock() { return true; };
-boolean TwirlEffect::clock_as_mask() { return true; };
+boolean TwirlEffect::clock_as_mask() { return false; };
 
 void TwirlEffect::loop(uint16_t ms) {
 	double center_x = _real_center_x; // - (cos8(_center_offset_angle)>>6);