diff --git a/bin/ruby-build b/bin/ruby-build
index f8fc0c4b..9e766c80 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -147,6 +147,25 @@ build_package_rbx() {
   } >&4 2>&1
 }
 
+build_package_jruby() {
+  build_package_copy
+  cd "${PREFIX_PATH}/bin"
+  ln -fs jruby ruby
+  install_jruby_launcher
+  remove_windows_files
+}
+
+install_jruby_launcher() {
+  cd "${PREFIX_PATH}/bin"
+  { ./ruby gem install jruby-launcher
+  } >&4 2>&1
+}
+
+remove_windows_files() {
+  cd "$PREFIX_PATH"
+  rm -f bin/*.exe bin/*.dll bin/*.bat bin/jruby.sh
+}
+
 build_package_copy() {
   cp -R . "$PREFIX_PATH"
 }
diff --git a/share/ruby-build/jruby-1.6.3 b/share/ruby-build/jruby-1.6.3
index 2341bc15..b2ebdabb 100644
--- a/share/ruby-build/jruby-1.6.3
+++ b/share/ruby-build/jruby-1.6.3
@@ -1,19 +1,2 @@
-after_install_package() {
-  shim_jruby
-  remove_windows_files
-}
-
-shim_jruby() {
-  cd "${PREFIX_PATH}/bin"
-  ln -fs jruby ruby
-  { ./ruby gem install jruby-launcher
-  } >&4 2>&1
-}
-
-remove_windows_files() {
-  cd "$PREFIX_PATH"
-  rm -f bin/*.exe bin/*.dll bin/*.bat bin/jruby.sh
-}
-
-install_package "jruby-1.6.3" "http://jruby.org.s3.amazonaws.com/downloads/1.6.3/jruby-bin-1.6.3.tar.gz" copy
+install_package "jruby-1.6.3" "http://jruby.org.s3.amazonaws.com/downloads/1.6.3/jruby-bin-1.6.3.tar.gz" jruby
 install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz" ruby
diff --git a/share/ruby-build/jruby-1.6.4 b/share/ruby-build/jruby-1.6.4
index bea9094a..a8c44bd7 100644
--- a/share/ruby-build/jruby-1.6.4
+++ b/share/ruby-build/jruby-1.6.4
@@ -1,19 +1,2 @@
-after_install_package() {
-  shim_jruby
-  remove_windows_files
-}
-
-shim_jruby() {
-  cd "${PREFIX_PATH}/bin"
-  ln -fs jruby ruby
-  { ./ruby gem install jruby-launcher
-  } >&4 2>&1
-}
-
-remove_windows_files() {
-  cd "$PREFIX_PATH"
-  rm -f bin/*.exe bin/*.dll bin/*.bat bin/jruby.sh
-}
-
-install_package "jruby-1.6.4" "http://jruby.org.s3.amazonaws.com/downloads/1.6.4/jruby-bin-1.6.4.tar.gz" copy
+install_package "jruby-1.6.4" "http://jruby.org.s3.amazonaws.com/downloads/1.6.4/jruby-bin-1.6.4.tar.gz" jruby
 install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz" ruby