diff --git a/candump.c b/candump.c
index 40904cc..f992bb9 100644
--- a/candump.c
+++ b/candump.c
@@ -303,7 +303,9 @@ int main(int argc, char **argv)
 	int join_filter;
 	char *ptr, *nptr;
 	struct sockaddr_can addr;
-	char ctrlmsg[CMSG_SPACE(sizeof(struct timeval) + 3 * sizeof(struct timespec) + sizeof(__u32))];
+	char ctrlmsg[CMSG_SPACE(sizeof(struct timeval)) +
+		     CMSG_SPACE(3 * sizeof(struct timespec)) +
+		     CMSG_SPACE(sizeof(__u32))];
 	struct iovec iov;
 	struct msghdr msg;
 	struct cmsghdr *cmsg;