diff --git a/pkgs/os-specific/linux/wireguard/default.nix b/pkgs/os-specific/linux/wireguard/default.nix
index bf306364b8bf..fbff511db7c3 100644
--- a/pkgs/os-specific/linux/wireguard/default.nix
+++ b/pkgs/os-specific/linux/wireguard/default.nix
@@ -35,6 +35,8 @@ let
     KERNELDIR = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";
     INSTALL_MOD_PATH = "\${out}";
 
+    NIX_CFLAGS = ["-Wno-error=cpp"];
+
     buildPhase = "make module";
   };