diff --git a/aliases.sh b/aliases.sh
index e367bb8..a35b16a 100755
--- a/aliases.sh
+++ b/aliases.sh
@@ -70,54 +70,15 @@ alias mdiff="mate -t source.diff"
 alias ssh1="ssh -o ControlMaster=no"
 
 
-# Some colorizing options for grc
-if [[ "$TERM" != dumb ]] && [[ -f $(which grc) ]] ; then
-  # Prevent grc aliases from overriding zsh completions.
-  setopt COMPLETE_ALIASES
-
-  # Supported commands
-  cmds=(
-    ls \
-    cc \
-    configure \
-    cvs \
-    df \
-    diff \
-    dig \
-    gcc \
-    gmake \
-    ifconfig \
-    iptables \
-    last \
-    ldap \
-    make \
-    mount \
-    mtr \
-    netstat \
-    ping \
-    ping6 \
-    ps \
-    ss \
-    traceroute \
-    traceroute6 \
-    wdiff \
-  );
-
-  # Set alias for available commands.
-  for cmd in $cmds ; do
-    if [[ -f $(which $cmd) ]] ; then
-      alias $cmd="grc --colour=on $cmd"
-    fi
-  done
-
-  # Clean up variables
-  unset cmds cmd
+# grc: try to source the definitions file in /etc/grc.zsh (print a warning if it does not exist)
+if [[ -f /etc/grc.zsh  ]]; then
+    echo "Could not find /etc/grc.zsh, command colorization will not work. Check your grc configuration" 1>&2
+else
+    source /etc/grc.zsh
 fi
 
+# dotfiles user aliases
 if [[ -f ~/.dotfiles_aliases ]];
 then
 	source ~/.dotfiles_aliases
 fi
-
-
-