diff --git a/app/lib/scope_parser.rb b/app/lib/scope_parser.rb
index d268688c8..45eb3c7b9 100644
--- a/app/lib/scope_parser.rb
+++ b/app/lib/scope_parser.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ScopeParser < Parslet::Parser
-  rule(:term)      { match('[a-z]').repeat(1).as(:term) }
+  rule(:term)      { match('[a-z_]').repeat(1).as(:term) }
   rule(:colon)     { str(':') }
   rule(:access)    { (str('write') | str('read')).as(:access) }
   rule(:namespace) { str('admin').as(:namespace) }