diff --git a/pkgs/development/python-modules/pyside/apiextractor.nix b/pkgs/development/python-modules/pyside/apiextractor.nix
index c7e0cc09f14..a27a365bb2c 100644
--- a/pkgs/development/python-modules/pyside/apiextractor.nix
+++ b/pkgs/development/python-modules/pyside/apiextractor.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, cmake, libxml2, libxslt, python, sphinx, qt4 }:
 
 stdenv.mkDerivation {
-  name = "${python.libPrefix}-pyside-apiextractor-0.10.10";
+  name = "pyside-apiextractor-0.10.10";
 
   src = fetchurl {
     url = "https://github.com/PySide/Apiextractor/archive/0.10.10.tar.gz";
diff --git a/pkgs/development/python-modules/pyside/default.nix b/pkgs/development/python-modules/pyside/default.nix
index 8f6213beaf1..6473ebf22b1 100644
--- a/pkgs/development/python-modules/pyside/default.nix
+++ b/pkgs/development/python-modules/pyside/default.nix
@@ -1,7 +1,7 @@
 { lib, fetchurl, cmake, python, mkPythonDerivation, pysideGeneratorrunner, pysideShiboken, qt4 }:
 
 mkPythonDerivation rec {
-  name = "${python.libPrefix}-pyside-${version}";
+  name = "pyside-${version}";
   version = "1.2.4";
 
   src = fetchurl {
diff --git a/pkgs/development/python-modules/pyside/generatorrunner.nix b/pkgs/development/python-modules/pyside/generatorrunner.nix
index b576b29dae7..28ea88ad1fa 100644
--- a/pkgs/development/python-modules/pyside/generatorrunner.nix
+++ b/pkgs/development/python-modules/pyside/generatorrunner.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, cmake, pysideApiextractor, python, sphinx, qt4 }:
 
 stdenv.mkDerivation {
-  name = "${python.libPrefix}-pyside-generatorrunner-0.6.16";
+  name = "pyside-generatorrunner-0.6.16";
 
   src = fetchurl {
     url = "https://github.com/PySide/Generatorrunner/archive/0.6.16.tar.gz";
diff --git a/pkgs/development/python-modules/pyside/shiboken.nix b/pkgs/development/python-modules/pyside/shiboken.nix
index 80b2325cbf4..8c91b63d0e1 100644
--- a/pkgs/development/python-modules/pyside/shiboken.nix
+++ b/pkgs/development/python-modules/pyside/shiboken.nix
@@ -2,7 +2,7 @@
 
 # Python 3.5 is not supported: https://github.com/PySide/Shiboken/issues/77
 stdenv.mkDerivation rec {
-  name = "${python.libPrefix}-pyside-shiboken-${version}";
+  name = "pyside-shiboken-${version}";
   version = "1.2.4";
 
   src = fetchurl {
diff --git a/pkgs/development/python-modules/pyside/tools.nix b/pkgs/development/python-modules/pyside/tools.nix
index facbccdce35..11f2bd97175 100644
--- a/pkgs/development/python-modules/pyside/tools.nix
+++ b/pkgs/development/python-modules/pyside/tools.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, cmake, pyside, python, qt4, pysideShiboken }:
 
 stdenv.mkDerivation {
-  name = "${python.libPrefix}-pyside-tools-0.2.15";
+  name = "pyside-tools-0.2.15";
 
   src = fetchurl {
     url = "https://github.com/PySide/Tools/archive/0.2.15.tar.gz";