diff --git a/src/vppinfra/socket.c b/src/vppinfra/socket.c
index 990d0f7..109cbad 100644
--- a/src/vppinfra/socket.c
+++ b/src/vppinfra/socket.c
@@ -278,7 +278,7 @@
 {
   struct msghdr mh = { 0 };
   struct iovec iov[1];
-  char ctl[CMSG_SPACE (sizeof (int)) * num_fds];
+  char ctl[CMSG_SPACE (sizeof (int) * num_fds)];
   int rv;
 
   iov[0].iov_base = msg;