diff --git a/scripts/install b/scripts/install
index 3680b03..0cb4675 100644
--- a/scripts/install
+++ b/scripts/install
@@ -40,6 +40,13 @@ app=$YNH_APP_INSTANCE_NAME
 final_path=/var/www/$app
 test ! -e "$final_path" || ynh_die "This path already contains a folder"
 
+# TODO : to be factorized into a helper someday ? ;)
+MEM=$(free | grep "^Mem"  | awk '{print $2}')
+SWAP=$(free | grep "^Swap" | awk '{print $2}')
+TOTAL_MEM_AND_SWAP=$(( ( $MEM+$SWAP ) / 1024 )) # In MB
+
+[[ $TOTAL_MEM_AND_SWAP -gt 2500 ]] || ynh_die "You need at least 2500 Mo of RAM+Swap to install Mastodon. Please consult the README to learn how to add swap."
+
 # Normalize the url path syntax
 path_url=$(ynh_normalize_url_path $path_url)