diff --git a/src/mainboard/google/dedede/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/dedede/variants/baseboard/include/baseboard/ec.h
index d9b031eb40..24fe264455 100644
--- a/src/mainboard/google/dedede/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/dedede/variants/baseboard/include/baseboard/ec.h
@@ -38,9 +38,12 @@
  * 2. Power button
  * 3. Key press
  * 4. Mode change
+ * 5. AC Connect/Disconnect
  */
 #define MAINBOARD_EC_S3_WAKE_EVENTS \
 	(MAINBOARD_EC_S5_WAKE_EVENTS |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_CONNECTED)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED) |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEY_PRESSED) |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_MODE_CHANGE))