diff --git a/pkgs/tools/system/dell-command-configure/default.nix b/pkgs/tools/system/dell-command-configure/default.nix
index b4cd7e5dbf63..cd313751c7b6 100644
--- a/pkgs/tools/system/dell-command-configure/default.nix
+++ b/pkgs/tools/system/dell-command-configure/default.nix
@@ -55,10 +55,11 @@ let
     pname = "dell-command-configure-unpacked-wrapper-lib";
     inherit version;
 
-    src = ./.;
+    unpackPhase = ''
+      cp ${./wrapper-lib.c} wrapper-lib.c
+    '';
 
     postPatch = ''
-      ls -al
       substitute wrapper-lib.c lib.c \
         --subst-var-by to "${unpacked}/srvadmin-hapi/opt/dell/srvadmin/etc/omreg.d/omreg-hapi.cfg"
       cc -fPIC -shared lib.c -o ${wrapperLibName}