diff --git a/pkgs/development/interpreters/xulrunner/wrapper/builder.sh b/pkgs/development/interpreters/xulrunner/wrapper/builder.sh
index 79247a16023..20bd86e3eac 100644
--- a/pkgs/development/interpreters/xulrunner/wrapper/builder.sh
+++ b/pkgs/development/interpreters/xulrunner/wrapper/builder.sh
@@ -2,8 +2,6 @@ source $stdenv/setup
 
 ensureDir $out/bin
 
-set -x
-
 wrapper="$out/bin/$launcher"
 
 if test -e $xulrunner/bin/xulrunner; then
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 9c4425794af..bdb0c0f1a50 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2100,7 +2100,7 @@ let
   xulrunnerWrapper = {application, launcher}:
     import ../development/interpreters/xulrunner/wrapper {
       inherit stdenv application launcher;
-      xulrunner = firefox3;
+      xulrunner = xulrunner3;
     };