diff --git a/include/osmocom/gsm/protocol/gsm_04_08.h b/include/osmocom/gsm/protocol/gsm_04_08.h
index 1bca068..f8f2eab 100644
--- a/include/osmocom/gsm/protocol/gsm_04_08.h
+++ b/include/osmocom/gsm/protocol/gsm_04_08.h
@@ -664,7 +664,7 @@
 /* auto-generated from the little endian part above (libosmocore/contrib/struct_endianess.py) */
 	uint8_t key_seq:4, spare:4;
 	union {
-		uint32_t classmark2;  /* Backward compatibility */
+		uint32_t classmark2;
 		struct {
 			uint8_t cm2_len;
 			struct gsm48_classmark2 cm2;
@@ -815,7 +815,7 @@
 /* auto-generated from the little endian part above (libosmocore/contrib/struct_endianess.py) */
 	uint8_t cipher_key_seq:4, cm_service_type:4;
 	union {
-		uint32_t classmark;  /* Backward compatibility */
+		uint32_t classmark;
 		struct {
 			uint8_t cm2_len;
 			struct gsm48_classmark2 classmark2;