diff --git a/keyboards/keebio/iris_ce/keymaps/chzerv/rules.mk b/keyboards/keebio/iris_ce/keymaps/chzerv/rules.mk
index dd8b56d0..105494c6 100644
--- a/keyboards/keebio/iris_ce/keymaps/chzerv/rules.mk
+++ b/keyboards/keebio/iris_ce/keymaps/chzerv/rules.mk
@@ -1,14 +1,15 @@
-# LTO_ENABLE = yes
-
+LTO_ENABLE = yes
 # VIA_ENABLE = yes
 
 TRI_LAYER_ENABLE = yes
 CAPS_WORD_ENABLE = yes
 DYNAMIC_TAPPING_TERM_ENABLE = yes
-NRKO_ENABLE = yes
 
 SRC += features/select_word.c
 
 # Diasble features we don't use to reduce firmware size
 COMMAND_ENABLE = no
 MAGIC_ENABLE = no
+AUDIO_ENABLE = no
+BLUETOOTH_ENABLE = no
+CONSOLE_ENABLE = no