diff --git a/README.md b/README.md
index 7ada6c5..7762388 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ sudo chmod +x ./install.sh
 sudo chmod +x ./deploy.sh
 
 # Install and deploy services
-sudo ./install.sh * && sudo ./deploy.sh *
+sudo ./install.sh --all && sudo ./deploy.sh --all
 ```
 
 ## Installation
@@ -37,7 +37,7 @@ sudo (bash|sh|zsh) ./install.sh [SERVICES...]
   ```
 - Install all services.
   ```sh
-  sudo ./install.sh *
+  sudo ./install.sh -a
   ```
 
 ## Déploiement
@@ -60,5 +60,5 @@ sudo (bash|sh|zsh) ./deploy.sh [SERVICES...]
   ```
 - Install all services.
   ```sh
-  sudo ./deploy.sh *
+  sudo ./deploy.sh -a
   ```
diff --git a/deploy.sh b/deploy.sh
index e3ad47b..12ac9bb 100644
--- a/deploy.sh
+++ b/deploy.sh
@@ -1,8 +1,10 @@
 APPS=$@
 
-if [[ $1 == "*" && $# -eq 1 ]]; then
-  APPS=$(ls -d */)
-fi  
+if [[ $# -eq 1 ]]; then
+  if [[ $1 == "--all"  $1 == "-a" ]]; then
+    APPS=$(ls -d */)
+  fi
+fi
 
 for app in $APPS
 do
diff --git a/install.sh b/install.sh
index 58aaeca..fb98b3d 100644
--- a/install.sh
+++ b/install.sh
@@ -5,9 +5,11 @@ source ./_requirements.sh
 # Install services
 APPS=$@
 
-if [[ $1 == "*" && $# -eq 1 ]]; then
-  APPS=$(ls -d */)
-fi  
+if [[ $# -eq 1 ]]; then
+  if [[ $1 == "--all"  $1 == "-a" ]]; then
+    APPS=$(ls -d */)
+  fi
+fi
 
 for app in $APPS
 do