diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
index c2f11d7..41a2df8 100644
--- a/BoardConfigCommon.mk
+++ b/BoardConfigCommon.mk
@@ -50,7 +50,7 @@ TARGET_PROVIDES_AUDIO_EXTNS := true
 TARGET_NO_BOOTLOADER := true
 
 # Display
-TARGET_SCREEN_DENSITY := 440
+TARGET_SCREEN_DENSITY ?= 440
 
 # Filesystem
 TARGET_FS_CONFIG_GEN := $(COMMON_PATH)/config.fs