diff --git a/src/openvpn/dns.c b/src/openvpn/dns.c
index e5ed1bc..abe30ed 100644
--- a/src/openvpn/dns.c
+++ b/src/openvpn/dns.c
@@ -608,11 +608,18 @@
 {
     int dns_pipe_fd[2];
     int ack_pipe_fd[2];
-    if (pipe(dns_pipe_fd) != 0 || pipe(ack_pipe_fd) != 0)
+    if (pipe(dns_pipe_fd) != 0)
     {
         msg(M_WARN | M_ERRNO, "run_dns_up_down: unable to create pipes");
         return false;
     }
+    if (pipe(ack_pipe_fd) != 0)
+    {
+        msg(M_WARN | M_ERRNO, "run_dns_up_down: unable to create pipes");
+        close(dns_pipe_fd[0]);
+        close(dns_pipe_fd[1]);
+        return false;
+    }
     updown_runner->pid = fork();
     if (updown_runner->pid == -1)
     {