diff --git a/pkgs/development/libraries/qt-4.x/4.8/default.nix b/pkgs/development/libraries/qt-4.x/4.8/default.nix
index 66a58dba32e2..369f328666da 100644
--- a/pkgs/development/libraries/qt-4.x/4.8/default.nix
+++ b/pkgs/development/libraries/qt-4.x/4.8/default.nix
@@ -130,7 +130,7 @@ stdenv.mkDerivation rec {
 
   configureFlags =
     ''
-      -v -no-separate-debug-info -release -no-fast -confirm-license -opensource
+      -v -no-separate-debug-info -release -fast -confirm-license -opensource
 
       -${if stdenv.isFreeBSD then "no-" else ""}opengl -xrender -xrandr -xinerama -xcursor -xinput -xfixes -fontconfig
       -qdbus -${if cups == null then "no-" else ""}cups -glib -dbus-linked -openssl-linked