diff --git a/Makefile b/Makefile
index ac70acc..2441d81 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ CSRCS+=fisqrt.c stick.c trig.c motor.c led.c watchdog.c panic.c status.c
 CSRCS+=thrust.c sensors.c spi.c sdcard.c log.c
 
 #PROJOPTS=-DUSE_UART -DSEND_DCM -DSTICK_DEBUG_CALIBRATE
-PROJOPTS=-DTIMER_CPPM
+PROJOPTS=-DTIMER_CPPM -DI2C_FAST
 #PROJOPTS=-DTIMER_CPPM -DUSE_UART -DPANIC_32BIT -DPANIC_CHECKPOINT -DI2C_FAST -DSEND_DCM
 #PROJOPTS=-DTIMER_CPPM -DPANIC_32BIT -DPANIC_CHECKPOINT -DI2C_FAST -DSEND_DCM
 #PROJOPTS=-DTIMER_CPPM -DPANIC_32BIT -DPANIC_CHECKPOINT -DI2C_FAST -DUSE_UART -DSEND_DCM