diff --git a/pkgs/by-name/de/dell-command-configure/package.nix b/pkgs/by-name/de/dell-command-configure/package.nix
index 52e79a25082e..d7df3dcf31ea 100644
--- a/pkgs/by-name/de/dell-command-configure/package.nix
+++ b/pkgs/by-name/de/dell-command-configure/package.nix
@@ -70,7 +70,7 @@ let
   };
 
 in
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   inherit version;
   pname = "dell-command-configure";
 
diff --git a/pkgs/by-name/de/dell-command-configure/wrapper-lib.c b/pkgs/by-name/de/dell-command-configure/wrapper-lib.c
index f93bcd58ab75..90ea786f727b 100755
--- a/pkgs/by-name/de/dell-command-configure/wrapper-lib.c
+++ b/pkgs/by-name/de/dell-command-configure/wrapper-lib.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 static const char from[] =  "/usr/lib/ext/dell/omreg.cfg";
 static const char to[] = "@to@";