diff --git a/jOOQ/src/main/java/org/jooq/impl/Cube.java b/jOOQ/src/main/java/org/jooq/impl/Cube.java
index 5229413111..8ef566eca8 100644
--- a/jOOQ/src/main/java/org/jooq/impl/Cube.java
+++ b/jOOQ/src/main/java/org/jooq/impl/Cube.java
@@ -62,7 +62,7 @@ final class Cube extends AbstractField<Object> implements QOM.Cube {
 
     @Override
     public final void accept(Context<?> ctx) {
-        ctx.visit(N_CUBE).sql('(').visit(arguments).sql(')');
+        ctx.visit(N_CUBE).sql(" (").visit(arguments).sql(')');
     }
 
     // -------------------------------------------------------------------------
diff --git a/jOOQ/src/main/java/org/jooq/impl/GroupingSets.java b/jOOQ/src/main/java/org/jooq/impl/GroupingSets.java
index 0d20945fee..1777601c36 100644
--- a/jOOQ/src/main/java/org/jooq/impl/GroupingSets.java
+++ b/jOOQ/src/main/java/org/jooq/impl/GroupingSets.java
@@ -75,7 +75,7 @@ final class GroupingSets extends AbstractField<Object> implements QOM.GroupingSe
         for (Collection<? extends Field<?>> fieldsSet : fieldSets)
             arg.add(new WrappedList(new QueryPartList<>(fieldsSet)));
 
-        ctx.visit(K_GROUPING_SETS).sql('(').visit(arg).sql(')');
+        ctx.visit(K_GROUPING_SETS).sql(" (").visit(arg).sql(')');
     }
 
     // -------------------------------------------------------------------------
diff --git a/jOOQ/src/main/java/org/jooq/impl/Rollup.java b/jOOQ/src/main/java/org/jooq/impl/Rollup.java
index 6b45584348..d51bab61e0 100644
--- a/jOOQ/src/main/java/org/jooq/impl/Rollup.java
+++ b/jOOQ/src/main/java/org/jooq/impl/Rollup.java
@@ -74,7 +74,7 @@ final class Rollup extends AbstractField<Object> implements QOM.Rollup {
                 break;
 
             default:
-                ctx.visit(N_ROLLUP).sql('(').visit(arguments).sql(')');
+                ctx.visit(N_ROLLUP).sql(" (").visit(arguments).sql(')');
                 break;
         }
     }