diff --git a/src/protocols/AX25/AX25.h b/src/protocols/AX25/AX25.h
index 3f258320..c7678a3a 100644
--- a/src/protocols/AX25/AX25.h
+++ b/src/protocols/AX25/AX25.h
@@ -9,12 +9,7 @@
 #include "../AFSK/AFSK.h"
 #include "../BellModem/BellModem.h"
 #include "../../utils/CRC.h"
-
-// macros to access bits in byte array, from http://www.mathcs.emory.edu/~cheung/Courses/255/Syllabus/1-C-intro/bit-array.html
-#define SET_BIT_IN_ARRAY(A, k)                                  ( A[(k/8)] |= (1 << (k%8)) )
-#define CLEAR_BIT_IN_ARRAY(A, k)                                ( A[(k/8)] &= ~(1 << (k%8)) )
-#define TEST_BIT_IN_ARRAY(A, k)                                 ( A[(k/8)] & (1 << (k%8)) )
-#define GET_BIT_IN_ARRAY(A, k)                                  ( (A[(k/8)] & (1 << (k%8))) ? 1 : 0 )
+#include "../../utils/FEC.h"
 
 // maximum callsign length in bytes
 #define RADIOLIB_AX25_MAX_CALLSIGN_LEN                          6
diff --git a/src/utils/FEC.h b/src/utils/FEC.h
index 30ba17ef..a33ff61f 100644
--- a/src/utils/FEC.h
+++ b/src/utils/FEC.h
@@ -71,4 +71,11 @@ class RadioLibBCH {
 // the global singleton
 extern RadioLibBCH RadioLibBCHInstance;
 
-#endif
\ No newline at end of file
+// macros to access bits in byte array, from http://www.mathcs.emory.edu/~cheung/Courses/255/Syllabus/1-C-intro/bit-array.html
+#define SET_BIT_IN_ARRAY(A, k)                                  ( A[(k/8)] |= (1 << (k%8)) )
+#define CLEAR_BIT_IN_ARRAY(A, k)                                ( A[(k/8)] &= ~(1 << (k%8)) )
+#define TEST_BIT_IN_ARRAY(A, k)                                 ( A[(k/8)] & (1 << (k%8)) )
+#define GET_BIT_IN_ARRAY(A, k)                                  ( (A[(k/8)] & (1 << (k%8))) ? 1 : 0 )
+
+
+#endif