diff --git a/pkgs/tools/networking/dhcp/builder.sh b/pkgs/tools/networking/dhcp/builder.sh
index 8fbd42b944c..62481547702 100644
--- a/pkgs/tools/networking/dhcp/builder.sh
+++ b/pkgs/tools/networking/dhcp/builder.sh
@@ -1,15 +1,17 @@
 source $stdenv/setup
 
-export DESTDIR=$out
-
 # Hack to prevent dhclient from overriding the PATH specified with
 # '-e' on the command-line.
-makeFlags="CLIENT_PATH='\"FAKE_PATH=/nothing\"'"
+makeFlagsArray=(CLIENT_PATH='\"FAKE_PATH=/nothing\"' \
+    USERBINDIR=$out/bin BINDIR=$out/sbin CLIENTBINDIR=$out/sbin \
+    ADMMANDIR=$out/share/man/cat8 FFMANDIR=$out/share/man/cat5 \
+    LIBMANDIR=$out/share/man/cat3 USRMANDIR=$out/share/man/cat1 \
+    LIBDIR=$out/lib INCDIR=$out/include \
+)
 
 configurePhase=configurePhase
 configurePhase() {
     ./configure
-    prefix=$out
 }
 
 preBuild=preBuild
diff --git a/pkgs/tools/networking/dhcp/default.nix b/pkgs/tools/networking/dhcp/default.nix
index 5aa60c5ee38..ff7a0c87791 100644
--- a/pkgs/tools/networking/dhcp/default.nix
+++ b/pkgs/tools/networking/dhcp/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation {
   name = "dhcp-3.0.5";
-  builder=./builder.sh;
+  builder = ./builder.sh;
   src = fetchurl {
     url = http://ftp.isc.org/isc/dhcp/dhcp-3.0.5.tar.gz;
     sha256 = "1dpz6y08vrn3mw0lrlwq1sfiq6nsixpwwgb9hngddka1lfr5yi6x";