diff --git a/zshrc b/zshrc
index d6e3da2..d6ea771 100644
--- a/zshrc
+++ b/zshrc
@@ -8,6 +8,9 @@
 
 # adapté et amélioré par lhark
 
+# Uncomment this line for perfomance analysis
+#zmodload zsh/zprof
+
 export PATH=$PATH:/usr/local/sbin:/usr/sbin:/sbin:~/bin:/opt/cuda/bin:~/.cargo/bin
 export EDITOR=/usr/bin/vim
 # Prevent mime associations by wine
@@ -20,8 +23,7 @@ export PATH="$PATH:$ANDROID_HOME/tools/bin:$ANDROID_HOME/tools:$ANDROID_HOME/pla
 
 # Configuration for virtualenv
 export WORKON_HOME=$HOME/.virtualenvs
-source /usr/local/bin/virtualenvwrapper.sh > /dev/null 2>&1
-source /usr/bin/virtualenvwrapper.sh > /dev/null 2>&1
+source /usr/bin/virtualenvwrapper_lazy.sh > /dev/null 2>&1
 # disables prompt mangling in virtual_env/bin/activate
 export VIRTUAL_ENV_DISABLE_PROMPT=1
 
@@ -147,8 +149,6 @@ autoload -U compinit promptinit
 compinit
 colors
 autoload -U zsh-mime-setup
-autoload -U zsh-mime-handler
-zsh-mime-setup
 
 
 ################