diff --git a/pkgs/os-specific/linux/virtualbox/default.nix b/pkgs/os-specific/linux/virtualbox/default.nix
index 2c30499c23f9..97497d7ba1c0 100644
--- a/pkgs/os-specific/linux/virtualbox/default.nix
+++ b/pkgs/os-specific/linux/virtualbox/default.nix
@@ -2,6 +2,7 @@
   stdenv,
   virtualbox,
   kernel,
+  kernelModuleMakeFlags,
 }:
 
 stdenv.mkDerivation {
@@ -18,7 +19,10 @@ stdenv.mkDerivation {
 
   env.KERN_DIR = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";
 
-  makeFlags = [ "INSTALL_MOD_PATH=$(out)" ];
+  makeFlags = kernelModuleMakeFlags ++ [
+    "INSTALL_MOD_PATH=$(out)"
+    "VBOX_ALLOW_MODULE_SIGNING=1"
+  ];
   installTargets = [ "install" ];
 
   enableParallelBuilding = true;