diff --git a/extras/ssd1306/component.mk b/extras/ssd1306/component.mk
index f12a292..9e1708a 100644
--- a/extras/ssd1306/component.mk
+++ b/extras/ssd1306/component.mk
@@ -1,17 +1,19 @@
 # Component makefile for extras/ssd1306
 
 # expected anyone using ssd1306 driver includes it as 'ssd1306/ssd1306.h'
-INC_DIRS += $(ssd1306_ROOT)..
+INC_DIRS += $(ROOT)extras
 
 # I2C support is on by default
-SSD1306_I2C_SUPPORT ?= 1
+SSD1306_I2C_SUPPORT   ?= 1
 # SPI4 support is on by default
-SSD1306_SPI4_SUPPORT ?= 1
+SSD1306_SPI4_SUPPORT  ?= 1
+# SPI3 support is on by default
+SSD1306_SPI3_SUPPORT  ?= 1
 
 # args for passing into compile rule generation
 ssd1306_SRC_DIR = $(ssd1306_ROOT)
 
-ssd1306_CFLAGS = -DSSD1306_I2C_SUPPORT=${SSD1306_I2C_SUPPORT} -DSSD1306_SPI4_SUPPORT=${SSD1306_SPI4_SUPPORT} $(CFLAGS)
+ssd1306_CFLAGS = -DSSD1306_I2C_SUPPORT=${SSD1306_I2C_SUPPORT} -DSSD1306_SPI4_SUPPORT=${SSD1306_SPI4_SUPPORT} -DSSD1306_SPI3_SUPPORT=${SSD1306_SPI3_SUPPORT} $(CFLAGS)
 
 
-$(eval $(call component_compile_rules,ssd1306))
+$(eval $(call component_compile_rules,ssd1306))
\ No newline at end of file