diff --git a/boards/sensorwatch_blue/board.mk b/boards/sensorwatch_blue/board.mk
index e90d572..4232b25 100644
--- a/boards/sensorwatch_blue/board.mk
+++ b/boards/sensorwatch_blue/board.mk
@@ -4,10 +4,10 @@ LDSCRIPT = saml22n18
 DEFINES += \
   -D__SAML22J18A__ \
 
-ifeq ($(FORCE_DISPLAY_TYPE), CUSTOM)
+ifeq ($(DISPLAY), CUSTOM)
   DEFINES += -DFORCE_CUSTOM_LCD
 endif
 
-ifeq ($(FORCE_DISPLAY_TYPE), CLASSIC)
+ifeq ($(DISPLAY), CLASSIC)
   DEFINES += -DFORCE_CLASSIC_LCD
 endif
diff --git a/boards/sensorwatch_green/board.mk b/boards/sensorwatch_green/board.mk
index e90d572..4232b25 100644
--- a/boards/sensorwatch_green/board.mk
+++ b/boards/sensorwatch_green/board.mk
@@ -4,10 +4,10 @@ LDSCRIPT = saml22n18
 DEFINES += \
   -D__SAML22J18A__ \
 
-ifeq ($(FORCE_DISPLAY_TYPE), CUSTOM)
+ifeq ($(DISPLAY), CUSTOM)
   DEFINES += -DFORCE_CUSTOM_LCD
 endif
 
-ifeq ($(FORCE_DISPLAY_TYPE), CLASSIC)
+ifeq ($(DISPLAY), CLASSIC)
   DEFINES += -DFORCE_CLASSIC_LCD
 endif
diff --git a/boards/sensorwatch_pro/board.mk b/boards/sensorwatch_pro/board.mk
index e90d572..4232b25 100644
--- a/boards/sensorwatch_pro/board.mk
+++ b/boards/sensorwatch_pro/board.mk
@@ -4,10 +4,10 @@ LDSCRIPT = saml22n18
 DEFINES += \
   -D__SAML22J18A__ \
 
-ifeq ($(FORCE_DISPLAY_TYPE), CUSTOM)
+ifeq ($(DISPLAY), CUSTOM)
   DEFINES += -DFORCE_CUSTOM_LCD
 endif
 
-ifeq ($(FORCE_DISPLAY_TYPE), CLASSIC)
+ifeq ($(DISPLAY), CLASSIC)
   DEFINES += -DFORCE_CLASSIC_LCD
 endif
diff --git a/boards/sensorwatch_red/board.mk b/boards/sensorwatch_red/board.mk
index e90d572..4232b25 100644
--- a/boards/sensorwatch_red/board.mk
+++ b/boards/sensorwatch_red/board.mk
@@ -4,10 +4,10 @@ LDSCRIPT = saml22n18
 DEFINES += \
   -D__SAML22J18A__ \
 
-ifeq ($(FORCE_DISPLAY_TYPE), CUSTOM)
+ifeq ($(DISPLAY), CUSTOM)
   DEFINES += -DFORCE_CUSTOM_LCD
 endif
 
-ifeq ($(FORCE_DISPLAY_TYPE), CLASSIC)
+ifeq ($(DISPLAY), CLASSIC)
   DEFINES += -DFORCE_CLASSIC_LCD
 endif