diff --git a/tests/t_client.sh.in b/tests/t_client.sh.in
index d4f7c4ab..9a0af93a 100755
--- a/tests/t_client.sh.in
+++ b/tests/t_client.sh.in
@@ -69,6 +69,11 @@ else
         echo "$0: this test must run be as root, or RUN_SUDO=... " >&2
         echo "      must be set correctly in 't_client.rc'. SKIP." >&2
         exit 77
+    else
+        # We have to use sudo. Make sure that we (hopefully) do not have
+        # to ask the users password during the test. This is done to
+        # prevent timing issues, e.g. when the waits for openvpn to start
+        $RUN_SUDO \true
     fi
 fi