diff --git a/jOOQ/src/main/java/org/jooq/impl/JoinTable.java b/jOOQ/src/main/java/org/jooq/impl/JoinTable.java
index 8ae44ed664..d926127df7 100755
--- a/jOOQ/src/main/java/org/jooq/impl/JoinTable.java
+++ b/jOOQ/src/main/java/org/jooq/impl/JoinTable.java
@@ -408,7 +408,7 @@ implements
                 context.formatSeparator()
                        .start(TABLE_JOIN_USING)
                        .visit(K_USING)
-                       .sql('(');
+                       .sql(" (");
                 Tools.fieldNames(context, using);
                 context.sql(')')
                        .end(TABLE_JOIN_USING);