diff --git a/scripts/install b/scripts/install
index e4f3eb1..3ed6803 100755
--- a/scripts/install
+++ b/scripts/install
@@ -34,10 +34,10 @@ sudo cp ../conf/nginx.conf $nginxconf
 sudo chown root: $nginxconf
 sudo chmod 600 $nginxconf
 
-sudo yunohost app setting zerobin is_public -v "$is_public" 
-if [ $is_public = "Yes" ];
+sudo yunohost app setting zerobin is_public -v "$is_public"
+if [ "$is_public" = "Yes" ];
 then
-  sudo yunohost app setting zerobin skipped_uris -v "/" 
+  sudo yunohost app setting zerobin skipped_uris -v "/"
 fi
 
 sudo service nginx reload
diff --git a/scripts/upgrade b/scripts/upgrade
index d6997af..ba2171a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -29,9 +29,9 @@ sudo cp ../conf/nginx.conf $nginxconf
 sudo chown root: $nginxconf
 sudo chmod 600 $nginxconf
 
-if [ $is_public = "Yes" ];
+if [ "$is_public" = "Yes" ];
 then
-  sudo yunohost app setting zerobin skipped_uris -v "/" 
+  sudo yunohost app setting zerobin skipped_uris -v "/"
 fi
 
 sudo service nginx reload