diff --git a/kmk/extensions/power.py b/kmk/extensions/power.py
index 8730929..90c925c 100644
--- a/kmk/extensions/power.py
+++ b/kmk/extensions/power.py
@@ -53,7 +53,7 @@ class Power(Extension):
         return
 
     def after_matrix_scan(self, keyboard, matrix_update):
-        if matrix_update:
+        if matrix_update or keyboard.secondary_matrix_update:
             self.psave_time_reset()
         return