diff --git a/AMS_Master_Code/Core/Lib/ADBMS6830B_Driver/Core/Src/ADBMS_LL_Driver.c b/AMS_Master_Code/Core/Lib/ADBMS6830B_Driver/Core/Src/ADBMS_LL_Driver.c
index 860657b..d80b573 100644
--- a/AMS_Master_Code/Core/Lib/ADBMS6830B_Driver/Core/Src/ADBMS_LL_Driver.c
+++ b/AMS_Master_Code/Core/Lib/ADBMS6830B_Driver/Core/Src/ADBMS_LL_Driver.c
@@ -12,7 +12,14 @@
 #include "swo_log.h"
 #include <stdint.h>
 #include <strings.h>
-#include "ADBMS_CRC_OLD.c"
+
+extern uint8_t calculateCommandPEC(uint8_t* data, uint8_t datalen);
+extern uint16_t updateCommandPEC(uint16_t currentPEC, uint8_t din);
+extern uint8_t checkCommandPEC(uint8_t* data, uint8_t datalen);
+
+extern uint8_t calculateDataPEC(uint8_t* data, uint8_t datalen);
+extern uint16_t updateDataPEC(uint16_t currentPEC, uint8_t din);
+extern uint8_t checkDataPEC(uint8_t* data, uint8_t datalen);
 
 #define INITIAL_COMMAND_PEC        0x0010
 #define INITIAL_DATA_PEC           0x0010