diff --git a/pkgs/applications/virtualization/virtualbox/default.nix b/pkgs/applications/virtualization/virtualbox/default.nix
index ddbb58e55fb..ce81ff3bf9f 100644
--- a/pkgs/applications/virtualization/virtualbox/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/default.nix
@@ -85,7 +85,6 @@ in stdenv.mkDerivation {
   '';
 
   installPhase = ''
-    srcroot="$(pwd)"
     libexec=$out/libexec/virtualbox
 
     # Install VirtualBox files