diff --git a/modules/directory/init.zsh b/modules/directory/init.zsh
index 3be411b5..e63f8858 100644
--- a/modules/directory/init.zsh
+++ b/modules/directory/init.zsh
@@ -26,6 +26,11 @@ unsetopt CLOBBER            # Do not overwrite existing files with > and >>.
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all directory; then
+  return 1
+fi
+
 alias d='dirs -v'
 for index ({1..9}) alias "$index"="cd +${index}"; unset index
 
diff --git a/modules/dpkg/init.zsh b/modules/dpkg/init.zsh
index 939e9100..fa8de27f 100644
--- a/modules/dpkg/init.zsh
+++ b/modules/dpkg/init.zsh
@@ -16,6 +16,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all dpkg; then
+  return 1
+fi
+
 # Cleans the cache.
 alias debc='sudo apt-get clean && sudo apt-get autoclean'
 
diff --git a/modules/fasd/init.zsh b/modules/fasd/init.zsh
index 7088e9c6..58beaf44 100644
--- a/modules/fasd/init.zsh
+++ b/modules/fasd/init.zsh
@@ -49,6 +49,11 @@ function fasd_cd {
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all fasd; then
+  return 1
+fi
+
 # Changes the current working directory interactively.
 alias j='fasd_cd -i'
 
diff --git a/modules/git/alias.zsh b/modules/git/alias.zsh
index bf922324..6bd6de5f 100644
--- a/modules/git/alias.zsh
+++ b/modules/git/alias.zsh
@@ -22,15 +22,15 @@ zstyle -s ':prezto:module:git:log:brief' format '_git_log_brief_format' \
 zstyle -s ':prezto:module:git:status:ignore' submodules '_git_status_ignore_submodules' \
   || _git_status_ignore_submodules='none'
 
+#
+# Aliases
+#
+
 # Return if conditions are unsatistied
 if ! zstyle -t ':prezto:alias' pmodule all git; then
   return 1
 fi
 
-#
-# Aliases
-#
-
 # Git
 alias g='git'
 
diff --git a/modules/history/init.zsh b/modules/history/init.zsh
index 31db4c5b..012c7408 100644
--- a/modules/history/init.zsh
+++ b/modules/history/init.zsh
@@ -35,5 +35,10 @@ setopt HIST_BEEP                 # Beep when accessing non-existent history.
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all history; then
+  return 1
+fi
+
 # Lists the ten most used commands.
 alias history-stat="history 0 | awk '{print \$2}' | sort | uniq -c | sort -n -r | head"
diff --git a/modules/macports/init.zsh b/modules/macports/init.zsh
index 4554ca1f..58e01b5b 100644
--- a/modules/macports/init.zsh
+++ b/modules/macports/init.zsh
@@ -37,6 +37,11 @@ path=(
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all macports; then
+  return 1
+fi
+
 alias portc='sudo port clean --all installed'
 alias porti='sudo port install'
 alias ports='port search'
diff --git a/modules/osx/init.zsh b/modules/osx/init.zsh
index 6acbfbc7..69b002e9 100644
--- a/modules/osx/init.zsh
+++ b/modules/osx/init.zsh
@@ -10,16 +10,6 @@ if [[ "$OSTYPE" != darwin* ]]; then
   return 1
 fi
 
-#
-# Aliases
-#
-
-# Change directory to the current Finder directory.
-alias cdf='cd "$(pfd)"'
-
-# Push directory to the current Finder directory.
-alias pushdf='pushd "$(pfd)"'
-
 #
 # Functions
 #
@@ -37,3 +27,18 @@ function rm-osx-cruft {
   \) -print0 | xargs -0 rm -rf
 }
 
+#
+# Aliases
+#
+
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all osx; then
+  return 1
+fi
+
+# Change directory to the current Finder directory.
+alias cdf='cd "$(pfd)"'
+
+# Push directory to the current Finder directory.
+alias pushdf='pushd "$(pfd)"'
+
diff --git a/modules/pacman/init.zsh b/modules/pacman/init.zsh
index c6fdc451..5a720ee8 100644
--- a/modules/pacman/init.zsh
+++ b/modules/pacman/init.zsh
@@ -18,6 +18,11 @@ fi
 # Frontend
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all pacman; then
+  return 1
+fi
+
 # Get the Pacman frontend.
 zstyle -s ':prezto:module:pacman' frontend '_pacman_frontend'
 
diff --git a/modules/perl/init.zsh b/modules/perl/init.zsh
index 62701283..5c7a0df8 100644
--- a/modules/perl/init.zsh
+++ b/modules/perl/init.zsh
@@ -43,6 +43,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all perl; then
+  return 1
+fi
+
 # General
 alias pl='perl'
 alias pld='perldoc'
diff --git a/modules/python/init.zsh b/modules/python/init.zsh
index 11875612..b3d63b80 100644
--- a/modules/python/init.zsh
+++ b/modules/python/init.zsh
@@ -42,6 +42,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all python; then
+  return 1
+fi
+
 alias py='python'
 
 # pythonz
diff --git a/modules/rails/init.zsh b/modules/rails/init.zsh
index e51185bb..71e7fb4a 100644
--- a/modules/rails/init.zsh
+++ b/modules/rails/init.zsh
@@ -16,6 +16,11 @@ fi
 # Aliases (Compatible with Rails 2)
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all rails; then
+  return 1
+fi
+
 alias ror='rails'
 alias rorc='_rails-command console'
 alias rordc='_rails-command dbconsole'
diff --git a/modules/rsync/init.zsh b/modules/rsync/init.zsh
index c3b3b577..4e07e9e7 100644
--- a/modules/rsync/init.zsh
+++ b/modules/rsync/init.zsh
@@ -14,6 +14,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all rsync; then
+  return 1
+fi
+
 _rsync_cmd='rsync --verbose --progress --human-readable --compress --archive --hard-links --one-file-system'
 
 # Mac OS X and HFS+ Enhancements
diff --git a/modules/ruby/init.zsh b/modules/ruby/init.zsh
index b5ab77d0..566f179d 100644
--- a/modules/ruby/init.zsh
+++ b/modules/ruby/init.zsh
@@ -40,6 +40,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all ruby; then
+  return 1
+fi
+
 # General
 alias rb='ruby'
 
diff --git a/modules/screen/init.zsh b/modules/screen/init.zsh
index 424f6584..00588ff9 100644
--- a/modules/screen/init.zsh
+++ b/modules/screen/init.zsh
@@ -32,6 +32,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all screen; then
+  return 1
+fi
+
 alias scr='screen'
 alias scrl='screen -list'
 alias scrn='screen -U -S'
diff --git a/modules/tmux/init.zsh b/modules/tmux/init.zsh
index a4648276..14d48b19 100644
--- a/modules/tmux/init.zsh
+++ b/modules/tmux/init.zsh
@@ -40,5 +40,10 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all tmux; then
+  return 1
+fi
+
 alias tmuxa='tmux attach-session'
 alias tmuxl='tmux list-sessions'
diff --git a/modules/utility/init.zsh b/modules/utility/init.zsh
index ea31138c..2d043e1a 100644
--- a/modules/utility/init.zsh
+++ b/modules/utility/init.zsh
@@ -13,10 +13,54 @@ pmodload 'helper' 'spectrum'
 # Correct commands.
 setopt CORRECT
 
+#
+# Functions
+#
+
+# Makes a directory and changes to it.
+function mkdcd {
+  [[ -n "$1" ]] && mkdir -p "$1" && builtin cd "$1"
+}
+
+# Changes to a directory and lists its contents.
+function cdls {
+  builtin cd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Pushes an entry onto the directory stack and lists its contents.
+function pushdls {
+  builtin pushd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Pops an entry off the directory stack and lists its contents.
+function popdls {
+  builtin popd "$argv[-1]" && ls "${(@)argv[1,-2]}"
+}
+
+# Prints columns 1 2 3 ... n.
+function slit {
+  awk "{ print ${(j:,:):-\$${^@}} }"
+}
+
+# Finds files and executes a command on them.
+function find-exec {
+  find . -type f -iname "*${1:-}*" -exec "${2:-file}" '{}' \;
+}
+
+# Displays user owned processes status.
+function psu {
+  ps -U "${1:-$USER}" -o 'pid,%cpu,%mem,command' "${(@)argv[2,-1]}"
+}
+
 #
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all utility; then
+  return 1
+fi
+
 # Disable correction.
 alias ack='nocorrect ack'
 alias cd='nocorrect cd'
@@ -139,42 +183,3 @@ fi
 # Serves a directory via HTTP.
 alias http-serve='python -m SimpleHTTPServer'
 
-#
-# Functions
-#
-
-# Makes a directory and changes to it.
-function mkdcd {
-  [[ -n "$1" ]] && mkdir -p "$1" && builtin cd "$1"
-}
-
-# Changes to a directory and lists its contents.
-function cdls {
-  builtin cd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Pushes an entry onto the directory stack and lists its contents.
-function pushdls {
-  builtin pushd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Pops an entry off the directory stack and lists its contents.
-function popdls {
-  builtin popd "$argv[-1]" && ls "${(@)argv[1,-2]}"
-}
-
-# Prints columns 1 2 3 ... n.
-function slit {
-  awk "{ print ${(j:,:):-\$${^@}} }"
-}
-
-# Finds files and executes a command on them.
-function find-exec {
-  find . -type f -iname "*${1:-}*" -exec "${2:-file}" '{}' \;
-}
-
-# Displays user owned processes status.
-function psu {
-  ps -U "${1:-$USER}" -o 'pid,%cpu,%mem,command' "${(@)argv[2,-1]}"
-}
-
diff --git a/modules/yum/init.zsh b/modules/yum/init.zsh
index d7019cd0..80e40dc4 100644
--- a/modules/yum/init.zsh
+++ b/modules/yum/init.zsh
@@ -15,6 +15,11 @@ fi
 # Aliases
 #
 
+# Return if conditions are unsatistied
+if ! zstyle -t ':prezto:alias' pmodule all yum; then
+  return 1
+fi
+
 alias yumc='sudo yum clean all'    # Cleans the cache.
 alias yumh='yum history'           # Displays history.
 alias yumi='sudo yum install'      # Installs package(s).