diff --git a/run.sh b/run.sh
index 15331c0..4175d55 100755
--- a/run.sh
+++ b/run.sh
@@ -1,24 +1,25 @@
 #!/usr/bin/env bash
 
-set -eu
+set -euE
 
 WG_INTERFACE=${WG_INTERFACE:-wgc0}
 WG_UP=false
 MASQUERADE_INTERFACE="eth+"
 MASQUERADE_ENABLED=${MASQUERADE_ENABLED:-true}
+IPTABLES=$(command -v iptables 2>/dev/null)
 
 _exit_trap() {
-    local exit_code=$?
-    echo "Stopping due to exit code ${exit_code}"
-    if [ "${WG_UP}" = true ]; then
-      sudo wg-quick down "${WG_INTERFACE}"
-      [ "$MASQUERADE_ENABLED" = true ] && sudo /sbin/iptables -t nat -D POSTROUTING -o "$MASQUERADE_INTERFACE" -j MASQUERADE
-    fi
+  local exit_code=$?
+  echo "Stopping due to exit code ${exit_code}"
+  if [ "${WG_UP}" = true ]; then
+    sudo wg-quick down "${WG_INTERFACE}"
+    [ "$MASQUERADE_ENABLED" = true ] && sudo "$IPTABLES" -t nat -D POSTROUTING -o "$MASQUERADE_INTERFACE" -j MASQUERADE
+  fi
 }
 trap _exit_trap EXIT
 
 sudo wg-quick up "${WG_INTERFACE}"
 WG_UP=true
-[ "$MASQUERADE_ENABLED" = true ] && sudo /sbin/iptables -t nat -A POSTROUTING -o "$MASQUERADE_INTERFACE" -j MASQUERADE
+[ "$MASQUERADE_ENABLED" = true ] && sudo "$IPTABLES" -t nat -A POSTROUTING -o "$MASQUERADE_INTERFACE" -j MASQUERADE
 sleep infinity &
 wait $!