diff --git a/drivers/staging/greybus/Makefile b/drivers/staging/greybus/Makefile
index 4f66ff3a9713..163cd13e7545 100644
--- a/drivers/staging/greybus/Makefile
+++ b/drivers/staging/greybus/Makefile
@@ -66,7 +66,7 @@ $(foreach opt,$(CONFIG_OPTIONS_DISABLE),$(if $(filter m y, $(CONFIG_$(opt))), \
 endif
 
 # add -Wall to try to catch everything we can.
-ccFlags-y := -Wall
+ccflags-y := -Wall
 
 all: module