diff --git a/pkgs/tools/networking/strongswan/default.nix b/pkgs/tools/networking/strongswan/default.nix
index 869e568d369..a2db62c884e 100644
--- a/pkgs/tools/networking/strongswan/default.nix
+++ b/pkgs/tools/networking/strongswan/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl
+{ stdenv, fetchurl, fetchpatch
 , pkgconfig, autoreconfHook
 , gmp, python, iptables, ldns, unbound, openssl, pcsclite
 , openresolv
@@ -38,6 +38,12 @@ stdenv.mkDerivation rec {
     ./ext_auth-path.patch
     ./firewall_defaults.patch
     ./updown-path.patch
+
+    # Don't use etc/dbus-1/system.d
+    (fetchpatch {
+      url = "https://patch-diff.githubusercontent.com/raw/strongswan/strongswan/pull/150.patch";
+      sha256 = "1irfxb99blb8v3hs0kmlhzkkwbmds1p0gq319z8lmacz36cgyj2c";
+    })
   ];
 
   postPatch = optionalString stdenv.isLinux ''