diff --git a/scripts/install b/scripts/install
index 2423baf..5a97f26 100755
--- a/scripts/install
+++ b/scripts/install
@@ -158,7 +158,7 @@ exec_occ ldap:test-config '' \
 # Define a function to add an external storage
 # Create the external storage for the given folders and enable sharing
 create_external_storage() {
-  local data_dir/data="$1"
+  local data_dir="$1"
   local mount_name="$2"
   local mount_id=`exec_occ files_external:create --output=json \
       "$mount_name" 'local' 'null::null' -c "data_dir=$data_dir/data" || true`