diff --git a/release/nrc/nrc_crk_cans/extras/Makefile b/release/nrc/nrc_crk_cans/extras/Makefile
index 4a2ad4b..eab4f47 100644
--- a/release/nrc/nrc_crk_cans/extras/Makefile
+++ b/release/nrc/nrc_crk_cans/extras/Makefile
@@ -3,8 +3,8 @@ KEYBOARD_NAME = nrc_crk_cans
 TOUCH_LAYOUT = $(OUTDIR)/$(KEYBOARD_NAME).keyman-touch-layout
 KMN = $(OUTDIR)/$(KEYBOARD_NAME).kmn
 
-KMN_OPTIONS =
-LAYOUT_OPTIONS =
+KMN_OPTIONS := $(or $(KMN_OPTIONS), --without-css --without-vowel-hack)
+LAYOUT_OPTIONS :=  $(or $(LAYOUT_OPTIONS), --without-latin)
 
 # Assuming that we're in extras/
 # we should place the touch layout and keyboard code in source/