diff --git a/pkgs/tools/security/pcsc-scm-scl011/default.nix b/pkgs/tools/security/pcsc-scm-scl011/default.nix
index 88b5c147f303..1418a4ead580 100644
--- a/pkgs/tools/security/pcsc-scm-scl011/default.nix
+++ b/pkgs/tools/security/pcsc-scm-scl011/default.nix
@@ -17,10 +17,9 @@ stdenv.mkDerivation rec {
   buildInputs = [ unzip ];
 
   unpackPhase = ''
-    echo ${stdenv.system}
     unzip $src
     tar xf "Linux Driver Ver${version}/sclgeneric_${version}_linux_${arch}bit.tar.gz"
-    cd sclgeneric_${version}_linux_${arch}bit; export sourceRoot=`pwd`
+    export sourceRoot=$(readlink -e sclgeneric_${version}_linux_${arch}bit)
   '';
 
   # Add support for SCL011 nPA (subsidized model for German eID)