diff --git a/src/tbf_dl.cpp b/src/tbf_dl.cpp
index 3a5a2e7..9fe1bd8 100644
--- a/src/tbf_dl.cpp
+++ b/src/tbf_dl.cpp
@@ -106,7 +106,7 @@
 	return 0;
 }
 
-struct gprs_rlcmac_dl_tbf *dl_tbf_alloc(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx, bool single_slot)
+struct gprs_rlcmac_dl_tbf *dl_tbf_alloc(struct gprs_rlcmac_bts *bts, struct GprsMs *ms, int8_t use_trx, bool single_slot)
 {
 	struct gprs_rlcmac_dl_tbf *tbf;
 	int rc;
diff --git a/src/tbf_dl.h b/src/tbf_dl.h
index 1ed3fb2..620cccf 100644
--- a/src/tbf_dl.h
+++ b/src/tbf_dl.h
@@ -118,9 +118,6 @@
 	return m_window.ws();
 }
 
-struct gprs_rlcmac_dl_tbf *dl_tbf_alloc(struct gprs_rlcmac_bts *bts, GprsMs *ms,
-					    int8_t use_trx, bool single_slot);
-
 #else /* ifdef __cplusplus */
 struct gprs_rlcmac_dl_tbf;
 #endif
@@ -130,6 +127,9 @@
 #endif
 struct gprs_rlcmac_bts;
 
+struct gprs_rlcmac_dl_tbf *dl_tbf_alloc(struct gprs_rlcmac_bts *bts, struct GprsMs *ms,
+					int8_t use_trx, bool single_slot);
+
 struct gprs_rlcmac_dl_tbf *as_dl_tbf(struct gprs_rlcmac_tbf *tbf);
 /* dispatch Unitdata.DL messages */
 int dl_tbf_handle(struct gprs_rlcmac_bts *bts,