diff --git a/run-vpn.sh b/run-vpn.sh
index 9e0723c..eca7a9b 100755
--- a/run-vpn.sh
+++ b/run-vpn.sh
@@ -46,20 +46,32 @@ while true; do
 
   # If yubikey is not used, use the TOTP seed
   if [[ -z "$OC_YUBIKEY" ]]; then
-    TOTP=$(oathtool --totp=sha1 -b "$SEED")
-    PASSWORD="$PASSWORD\n$TOTP"
+
+    if [[ -z "$SEED" ]]; then :; else
+      TOTP=$(oathtool --totp=sha1 -b "$SEED")
+      PASSWORD="$PASSWORD\n$TOTP"
+    fi
   else
     YUBIKEY_TOTP="--token-mode=yubioath --token-secret=$OC_YUBIKEY"
   fi
 
-  echo -e "$PASSWORD" | sudo openconnect \
-    --csd-wrapper hostscan-bypass.sh \
-    --passwd-on-stdin \
-    --os=mac-intel \
-    $YUBIKEY_TOTP \
-    $SCRIPT_INCLUDE \
-    -u $USERNAME \
-    $SERVER
+  if [ -z "$SEED" ] && [ -z "$OC_YUBIKEY" ]; then
+      sudo openconnect \
+      --csd-wrapper hostscan-bypass.sh \
+      --os=mac-intel \
+      $SCRIPT_INCLUDE \
+      -u $USERNAME \
+      $SERVER
+
+  else
+    echo -e "$PASSWORD" | sudo openconnect \
+      --csd-wrapper hostscan-bypass.sh \
+      --os=mac-intel \
+      $YUBIKEY_TOTP \
+      $SCRIPT_INCLUDE \
+      -u $USERNAME \
+      $SERVER
+  fi
 
   echo "Openconnect closed. Waiting 3 seconds."
   sleep 3