diff --git a/plugins/python-build/share/python-build/jython-2.5.0 b/plugins/python-build/share/python-build/jython-2.5.0
index cbf95879..7f0ac88d 100644
--- a/plugins/python-build/share/python-build/jython-2.5.0
+++ b/plugins/python-build/share/python-build/jython-2.5.0
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.5.0" "https://downloads.sourceforge.net/project/jython/jython/2.5.0/jython_installer-2.5.0.jar#f98b83fce9669feec69d0a17ee515a20" jython
+install_jar "jython-2.5.0" "https://downloads.sourceforge.net/project/jython/jython/2.5.0/jython_installer-2.5.0.jar#f98b83fce9669feec69d0a17ee515a20" jython
 # distribute (>= 0.33) does not support Jython prior to 2.5.2
 # * https://github.com/yyuu/pyenv/issues/15
 # * https://bitbucket.org/tarek/distribute/issue/367/importing-setuptoolssandbox-fails-on
diff --git a/plugins/python-build/share/python-build/jython-2.5.1 b/plugins/python-build/share/python-build/jython-2.5.1
index ad3c18d8..4919033a 100644
--- a/plugins/python-build/share/python-build/jython-2.5.1
+++ b/plugins/python-build/share/python-build/jython-2.5.1
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.5.1" "https://downloads.sourceforge.net/project/jython/jython/2.5.1/jython_installer-2.5.1.jar#2ee978eff4306b23753b3fe9d7af5b37" jython
+install_jar "jython-2.5.1" "https://downloads.sourceforge.net/project/jython/jython/2.5.1/jython_installer-2.5.1.jar#2ee978eff4306b23753b3fe9d7af5b37" jython
 # distribute (>= 0.33) does not support Jython prior to 2.5.2
 # * https://github.com/yyuu/pyenv/issues/15
 # * https://bitbucket.org/tarek/distribute/issue/367/importing-setuptoolssandbox-fails-on
diff --git a/plugins/python-build/share/python-build/jython-2.5.2 b/plugins/python-build/share/python-build/jython-2.5.2
index e062acb4..48d10c70 100644
--- a/plugins/python-build/share/python-build/jython-2.5.2
+++ b/plugins/python-build/share/python-build/jython-2.5.2
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.5.2" "https://downloads.sourceforge.net/project/jython/jython/2.5.2/jython_installer-2.5.2.jar#7c7d9abd8985df480edeacd27ed9dcd5" jython
+install_jar "jython-2.5.2" "https://downloads.sourceforge.net/project/jython/jython/2.5.2/jython_installer-2.5.2.jar#7c7d9abd8985df480edeacd27ed9dcd5" jython
 install_package "setuptools-1.4.2" "https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz#13951be6711438073fbe50843e7f141f" python
 # pip (>= 1.3) does not work properly since it uses HTTPS for downloads
 # * https://github.com/yyuu/pyenv/issues/15
diff --git a/plugins/python-build/share/python-build/jython-2.5.3 b/plugins/python-build/share/python-build/jython-2.5.3
index 04980b3b..c56add6d 100644
--- a/plugins/python-build/share/python-build/jython-2.5.3
+++ b/plugins/python-build/share/python-build/jython-2.5.3
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.5.3" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.5.3/jython-installer-2.5.3.jar#41633b4557483d6d4237ee79ffcebe7b" jython
+install_jar "jython-2.5.3" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.5.3/jython-installer-2.5.3.jar#41633b4557483d6d4237ee79ffcebe7b" jython
 install_package "setuptools-1.4.2" "https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz#13951be6711438073fbe50843e7f141f" python
 # pip (>= 1.3) does not work properly since it uses HTTPS for downloads
 # * https://github.com/yyuu/pyenv/issues/15
diff --git a/plugins/python-build/share/python-build/jython-2.5.4-rc1 b/plugins/python-build/share/python-build/jython-2.5.4-rc1
index b0d8429f..4af935f1 100644
--- a/plugins/python-build/share/python-build/jython-2.5.4-rc1
+++ b/plugins/python-build/share/python-build/jython-2.5.4-rc1
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.5.4-rc1" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.5.4-rc1/jython-installer-2.5.4-rc1.jar#1be8d75d02886ce1a8542bb794a20db2" jython
+install_jar "jython-2.5.4-rc1" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.5.4-rc1/jython-installer-2.5.4-rc1.jar#1be8d75d02886ce1a8542bb794a20db2" jython
 install_package "setuptools-1.4.2" "https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz#13951be6711438073fbe50843e7f141f" python
 # pip (>= 1.3) does not work properly since it uses HTTPS for downloads
 # * https://github.com/yyuu/pyenv/issues/15
diff --git a/plugins/python-build/share/python-build/jython-2.7-beta1 b/plugins/python-build/share/python-build/jython-2.7-beta1
index b4508f6c..34b30af1 100644
--- a/plugins/python-build/share/python-build/jython-2.7-beta1
+++ b/plugins/python-build/share/python-build/jython-2.7-beta1
@@ -1,5 +1,5 @@
 require_java
-install_jar "Jython-2.7-beta1" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.7-b1/jython-installer-2.7-b1.jar" jython
+install_jar "jython-2.7-beta1" "http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.7-b1/jython-installer-2.7-b1.jar" jython
 install_package "setuptools-3.6" "https://pypi.python.org/packages/source/s/setuptools/setuptools-3.6.tar.gz#8f3a1dcdc14313c8334eb6af4f66ea0a" python
 # pip (>= 1.3) does not work properly since it uses HTTPS for downloads
 # * https://github.com/yyuu/pyenv/issues/15