diff --git a/flight/Libraries/packet_handler.c b/flight/Libraries/packet_handler.c
index d2bfe2a91..e7f0dced9 100644
--- a/flight/Libraries/packet_handler.c
+++ b/flight/Libraries/packet_handler.c
@@ -30,7 +30,6 @@
 #include "openpilot.h"
 #include "packet_handler.h"
 #include "aes.h"
-#include "crc.h"
 
 // Private types and constants
 typedef struct {
diff --git a/flight/PipXtreme/Makefile b/flight/PipXtreme/Makefile
index c57adfead..3c0200db2 100755
--- a/flight/PipXtreme/Makefile
+++ b/flight/PipXtreme/Makefile
@@ -222,7 +222,6 @@ SRC += $(FLIGHTLIB)/fifo_buffer.c
 SRC += $(FLIGHTLIB)/CoordinateConversions.c
 SRC += $(FLIGHTLIB)/taskmonitor.c
 SRC += $(FLIGHTLIB)/aes.c
-SRC += $(FLIGHTLIB)/crc.c
 SRC += $(FLIGHTLIB)/packet_handler.c
 
 ## CMSIS for STM32