diff --git a/scripts/_common.sh b/scripts/_common.sh
index 3b36634..5d74bd4 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -14,8 +14,9 @@ pkg_dependencies="acl nim libsass-dev"
 function build_nitter {
 	pushd "$final_path" || ynh_die
 		chown -R $app:$app $final_path
-		sudo -u $app env "PATH=/opt/yunohost/$app/nim-installation/bin:$(sudo -u $app sh -c 'echo $PATH')" nimble build -d:release -y
-		sudo -u $app env "PATH=/opt/yunohost/$app/nim-installation/bin:$(sudo -u $app sh -c 'echo $PATH')" nimble scss -y
+		sudo -u $app env "PATH=/opt/yunohost/$app/nim-installation/bin:$(sudo -u $app sh -c 'echo $PATH')" nimble build -d:release -y -d:danger --passC:"-flto" --passL:"-flto" 2>&1
+		sudo -u $app env "PATH=/opt/yunohost/$app/nim-installation/bin:$(sudo -u $app sh -c 'echo $PATH')" strip -s nitter  2>&1
+		sudo -u $app env "PATH=/opt/yunohost/$app/nim-installation/bin:$(sudo -u $app sh -c 'echo $PATH')" nimble scss -y 2>&1
 		mkdir -p $final_path/tmp
 		chown -R root:root $final_path
 	popd || ynh_die
diff --git a/scripts/install b/scripts/install
index 39324c2..592923b 100755
--- a/scripts/install
+++ b/scripts/install
@@ -99,7 +99,8 @@ ynh_script_progression --message="Setting up source files..." --weight=1
 
 ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source --dest_dir="$final_path" --source_id="$architecture"
+ynh_setup_source --dest_dir="$final_path" --source_id="app"
+ynh_setup_source --dest_dir="$final_path/nim-installation" --source_id="$architecture"
 
 #=================================================
 # NGINX CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index c49f52e..f754157 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -70,7 +70,8 @@ then
 
 	# Download, check integrity, uncompress and patch the source from app.src
 	mv "$final_path/nitter.conf" "$final_path/nitter.conf.bak"
-	ynh_setup_source --dest_dir="$final_path" --source_id="$architecture"
+	ynh_setup_source --dest_dir="$final_path" --source_id="app"
+	ynh_setup_source --dest_dir="$final_path/nim-installation" --source_id="$architecture"
 	mv "$final_path/nitter.conf.bak" "$final_path/nitter.conf"
 fi