diff --git a/ccsds_types.h b/ccsds_types.h
--- a/ccsds_types.h
+++ b/ccsds_types.h
@@ -666,7 +666,7 @@ typedef struct {
 
     //******************
     // COMMON PARAMETERS
-    unsigned char unused0;
+    unsigned char sy_lfr_common_parameters_spare;
     unsigned char sy_lfr_common_parameters;
 
     //******************
diff --git a/fsw_params_nb_bytes.h b/fsw_params_nb_bytes.h
--- a/fsw_params_nb_bytes.h
+++ b/fsw_params_nb_bytes.h
@@ -36,6 +36,7 @@
 
 //TC_LFR_LOAD_FBINS_MASK
 #define NB_FBINS_MASKS          12
+#define NB_BYTES_PER_FREQ_MASK  16
 #define NB_BYTES_PER_FBINS_MASK 4
 
 // TC_LFR_LOAD_KCOEFFICIENTS