diff --git a/include/uv.h b/include/uv.h
index 7eb4d5fd..59732388 100644
--- a/include/uv.h
+++ b/include/uv.h
@@ -809,10 +809,12 @@ enum uv_tcp_flags {
 UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle,
                           const struct sockaddr* addr,
                           unsigned int flags);
-UV_EXTERN int uv_tcp_getsockname(uv_tcp_t* handle, struct sockaddr* name,
-    int* namelen);
-UV_EXTERN int uv_tcp_getpeername(uv_tcp_t* handle, struct sockaddr* name,
-    int* namelen);
+UV_EXTERN int uv_tcp_getsockname(const uv_tcp_t* handle,
+                                 struct sockaddr* name,
+                                 int* namelen);
+UV_EXTERN int uv_tcp_getpeername(const uv_tcp_t* handle,
+                                 struct sockaddr* name,
+                                 int* namelen);
 
 /*
  * Establish an IPv4 or IPv6 TCP connection.  Provide an initialized TCP handle
diff --git a/src/unix/tcp.c b/src/unix/tcp.c
index 80b5471a..cd842b08 100644
--- a/src/unix/tcp.c
+++ b/src/unix/tcp.c
@@ -158,7 +158,7 @@ int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock) {
 }
 
 
-int uv_tcp_getsockname(uv_tcp_t* handle,
+int uv_tcp_getsockname(const uv_tcp_t* handle,
                        struct sockaddr* name,
                        int* namelen) {
   socklen_t socklen;
@@ -180,7 +180,7 @@ int uv_tcp_getsockname(uv_tcp_t* handle,
 }
 
 
-int uv_tcp_getpeername(uv_tcp_t* handle,
+int uv_tcp_getpeername(const uv_tcp_t* handle,
                        struct sockaddr* name,
                        int* namelen) {
   socklen_t socklen;
diff --git a/src/win/tcp.c b/src/win/tcp.c
index d3df3ae3..5dcdcd47 100644
--- a/src/win/tcp.c
+++ b/src/win/tcp.c
@@ -747,8 +747,9 @@ static int uv_tcp_try_connect(uv_connect_t* req,
 }
 
 
-int uv_tcp_getsockname(uv_tcp_t* handle, struct sockaddr* name,
-    int* namelen) {
+int uv_tcp_getsockname(const uv_tcp_t* handle,
+                       struct sockaddr* name,
+                       int* namelen) {
   int result;
 
   if (!(handle->flags & UV_HANDLE_BOUND)) {
@@ -768,8 +769,9 @@ int uv_tcp_getsockname(uv_tcp_t* handle, struct sockaddr* name,
 }
 
 
-int uv_tcp_getpeername(uv_tcp_t* handle, struct sockaddr* name,
-    int* namelen) {
+int uv_tcp_getpeername(const uv_tcp_t* handle,
+                       struct sockaddr* name,
+                       int* namelen) {
   int result;
 
   if (!(handle->flags & UV_HANDLE_BOUND)) {