diff --git a/src/network.c b/src/network.c
index 0074765..e67fd3c 100644
--- a/src/network.c
+++ b/src/network.c
@@ -547,7 +547,7 @@ ssize_t net_recv(int fd, void* buf, size_t len, int flags)
 }
 
 
-ssize_t net_send(int fd, void* buf, size_t len, int flags)
+ssize_t net_send(int fd, const void* buf, size_t len, int flags)
 {
 	ssize_t ret = send(fd, buf, len, flags);
 	if (ret >= 0)
diff --git a/src/network.h b/src/network.h
index e51b51b..d1e179c 100644
--- a/src/network.h
+++ b/src/network.h
@@ -163,7 +163,7 @@ extern ssize_t net_recv(int fd, void* buf, size_t len, int flags);
 /**
  * A wrapper for the send() function call.
  */
-extern ssize_t net_send(int fd, void* buf, size_t len, int flags);
+extern ssize_t net_send(int fd, const void* buf, size_t len, int flags);
 
 /**
  * This tries to create a AF_INET6 socket.