diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h b/openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h
index e956d9ea51..9bc3643557 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h
@@ -64,7 +64,7 @@ void free_nr_ue_dlsch(NR_UE_DLSCH_t **dlsch, uint16_t N_RB_DL);
 NR_UE_DLSCH_t *new_nr_ue_dlsch(uint8_t Kmimo,uint8_t Mdlharq,uint32_t Nsoft,uint8_t max_turbo_iterations,uint16_t N_RB_DL);
 
 
-void free_nr_ue_ulsch(NR_UE_ULSCH_t **ulsch,unsigned char N_RB_UL);
+void free_nr_ue_ulsch(NR_UE_ULSCH_t **ulsch, uint16_t N_RB_UL);
 
 NR_UE_ULSCH_t *new_nr_ue_ulsch(uint16_t N_RB_UL, int number_of_harq_pids);
 
diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c b/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c
index d77fe35047..0ab4c94b96 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_coding.c
@@ -43,7 +43,7 @@
 
 //#define DEBUG_ULSCH_CODING
 
-void free_nr_ue_ulsch(NR_UE_ULSCH_t **ulschptr,unsigned char N_RB_UL)
+void free_nr_ue_ulsch(NR_UE_ULSCH_t **ulschptr, uint16_t N_RB_UL)
 
 {
   int i, r;