diff --git a/srslte/include/srslte/io/netsink.h b/srslte/include/srslte/io/netsink.h
index 154d33feb..4f0771958 100644
--- a/srslte/include/srslte/io/netsink.h
+++ b/srslte/include/srslte/io/netsink.h
@@ -60,7 +60,7 @@ typedef struct SRSLTE_API {
 
 SRSLTE_API int srslte_netsink_init(srslte_netsink_t *q, 
                                    char *address, 
-                                   int port, 
+                                   uint16_t port,
                                    srslte_netsink_type_t type);
 
 SRSLTE_API void srslte_netsink_free(srslte_netsink_t *q);
diff --git a/srslte/include/srslte/io/netsource.h b/srslte/include/srslte/io/netsource.h
index b581a1ef1..7a2739993 100644
--- a/srslte/include/srslte/io/netsource.h
+++ b/srslte/include/srslte/io/netsource.h
@@ -61,7 +61,7 @@ typedef struct SRSLTE_API {
 
 SRSLTE_API int srslte_netsource_init(srslte_netsource_t *q, 
                                      char *address, 
-                                     int port, 
+                                     uint16_t port,
                                      srslte_netsource_type_t type);
 
 SRSLTE_API void srslte_netsource_free(srslte_netsource_t *q);
diff --git a/srslte/lib/io/netsink.c b/srslte/lib/io/netsink.c
index bedb5fc92..c7f8d3db8 100644
--- a/srslte/lib/io/netsink.c
+++ b/srslte/lib/io/netsink.c
@@ -38,7 +38,7 @@
 
 #include "srslte/io/netsink.h"
 
-int srslte_netsink_init(srslte_netsink_t *q, char *address, int port, srslte_netsink_type_t type) {
+int srslte_netsink_init(srslte_netsink_t *q, char *address, uint16_t port, srslte_netsink_type_t type) {
   bzero(q, sizeof(srslte_netsink_t));
 
   q->sockfd=socket(AF_INET, type==SRSLTE_NETSINK_TCP?SOCK_STREAM:SOCK_DGRAM,0);  
diff --git a/srslte/lib/io/netsource.c b/srslte/lib/io/netsource.c
index f41296c3c..a86a05d1c 100644
--- a/srslte/lib/io/netsource.c
+++ b/srslte/lib/io/netsource.c
@@ -36,7 +36,7 @@
 
 #include "srslte/io/netsource.h"
 
-int srslte_netsource_init(srslte_netsource_t *q, char *address, int port, srslte_netsource_type_t type) {
+int srslte_netsource_init(srslte_netsource_t *q, char *address, uint16_t port, srslte_netsource_type_t type) {
   bzero(q, sizeof(srslte_netsource_t));
 
   q->sockfd=socket(AF_INET,type==SRSLTE_NETSOURCE_TCP?SOCK_STREAM:SOCK_DGRAM,0);