diff --git a/lib/rom/sql/schema/dsl.rb b/lib/rom/sql/schema/dsl.rb
index 46ff8744..5233e7d9 100644
--- a/lib/rom/sql/schema/dsl.rb
+++ b/lib/rom/sql/schema/dsl.rb
@@ -31,7 +31,7 @@ def opts
           if index_dsl
             opts = super
 
-            { **opts, indexes: index_dsl.(relation, opts[:attributes]) }
+            {**opts, indexes: index_dsl.(relation, opts[:attributes])}
           else
             super
           end