diff --git a/drivers/char/broadcom/vc_sm/Makefile b/drivers/char/broadcom/vc_sm/Makefile
index 20b7646fe4b64a..f73393ef0fdd3e 100644
--- a/drivers/char/broadcom/vc_sm/Makefile
+++ b/drivers/char/broadcom/vc_sm/Makefile
@@ -1,5 +1,5 @@
 ccflags-$(CONFIG_BCM_VC_SM) += -Werror -Wall -Wstrict-prototypes -Wno-trigraphs -O2
-ccflags-$(CONFIG_BCM_VC_SM) += -I"drivers/staging/vc04_services" -I"drivers/staging/vc04_services/interface/vchi" -I"drivers/staging/vc04_services/interface/vchiq_arm" -I"fs"
+ccflags-$(CONFIG_BCM_VC_SM) += -I$(srctree)/"drivers/staging/vc04_services" -I$(srctree)/"drivers/staging/vc04_services/interface/vchi" -I$(srctree)/"drivers/staging/vc04_services/interface/vchiq_arm" -I$(srctree)/"fs"
 ccflags-$(CONFIG_BCM_VC_SM) += -DOS_ASSERT_FAILURE -D__STDC_VERSION=199901L -D__STDC_VERSION__=199901L -D__VCCOREVER__=0 -D__KERNEL__ -D__linux__
 
 obj-$(CONFIG_BCM_VC_SM) := vc-sm.o
diff --git a/drivers/net/wireless/realtek/rtl8192cu/Makefile b/drivers/net/wireless/realtek/rtl8192cu/Makefile
index c399011a3e3776..ef6156c0f36874 100644
--- a/drivers/net/wireless/realtek/rtl8192cu/Makefile
+++ b/drivers/net/wireless/realtek/rtl8192cu/Makefile
@@ -16,7 +16,7 @@ EXTRA_CFLAGS += -Wno-unused
 
 EXTRA_CFLAGS += -Wno-uninitialized
 
-EXTRA_CFLAGS += -I$(src)/include
+EXTRA_CFLAGS += -I$(srctree)/$(src)/include
 
 CONFIG_AUTOCFG_CP = n