diff --git a/pkgs/development/compilers/adobe-flex-sdk/default.nix b/pkgs/development/compilers/adobe-flex-sdk/default.nix
index 7beea35a78a6..dc209bd6ddbd 100644
--- a/pkgs/development/compilers/adobe-flex-sdk/default.nix
+++ b/pkgs/development/compilers/adobe-flex-sdk/default.nix
@@ -1,10 +1,11 @@
 args: with args;
 stdenv.mkDerivation rec {
-  name = "adobe-flex-sdk-3.3.0.4852_mpl";
+  name = "adobe_flex_sdk_3.4.1.10084_mpl";
 
   src = fetchurl {
-    url = http://flexorg.wip3.adobe.com/flexsdk/3.3.0.4852/flex_sdk_3.3.0.4852_mpl.zip;
-    sha256 = "1gsm774afc7zwv3hyib5n6fpdbnd0dh6z7r2amjf38fm96jw7a99";
+    # This is the open source distribution
+    url = http://fpdownload.adobe.com/pub/flex/sdk/builds/flex3/flex_sdk_3.4.1.10084_mpl.zip;
+    sha256 = "0bq0cnq25qyr3g64sqqc20y3mmnhgh07p3ylxd2iq0ha8cdis7z0";
   };
 
   phases="installPhase";
@@ -18,9 +19,9 @@ stdenv.mkDerivation rec {
     t=$out/opt/flex-sdk
     ensureDir $t $out/bin
     mv * $t
-    sed 's/
$//' -i $t/bin/mxmlc
-    rm $t/bin/*.exe
-    for i in $t/bin/mxmlc; do
+    rm $t/bin/*.exe $t/bin/*.bat
+    sed 's/
$//' -i $t/bin/*
+    for i in $t/bin/*; do
       b="$(basename "$i")";
     cat > "$out/bin/$b" << EOF
     #!/bin/sh