diff --git a/keyboards/handwired/replicazeron/stm32f103/rules.mk b/keyboards/handwired/replicazeron/stm32f103/rules.mk
index 425581498f5..0f708a204b4 100644
--- a/keyboards/handwired/replicazeron/stm32f103/rules.mk
+++ b/keyboards/handwired/replicazeron/stm32f103/rules.mk
@@ -4,6 +4,3 @@ EXTRAKEY_ENABLE = yes
 MOUSEKEY_ENABLE = yes
 NKRO_ENABLE = yes
 RGBLIGHT_ENABLE = yes
-
-# Enter lower-power sleep mode when on the ChibiOS idle thread
-OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE