diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index 1403e75b69..07ad67a3e5 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -37,7 +37,6 @@
  */
 package org.jooq.impl;
 
-import static java.lang.Boolean.FALSE;
 import static java.lang.Boolean.TRUE;
 import static java.util.Arrays.asList;
 import static java.util.Collections.emptyList;
@@ -54,7 +53,9 @@ import static org.jooq.JoinType.JOIN;
 // ...
 // ...
 // ...
+import static org.jooq.SQLDialect.DERBY;
 // ...
+import static org.jooq.SQLDialect.HSQLDB;
 // ...
 import static org.jooq.SQLDialect.MARIADB;
 // ...
@@ -924,7 +925,8 @@ final class DefaultParseContext extends AbstractParseContext implements ParseCon
 
 
 
-    static final Set<SQLDialect>         SUPPORTS_HASH_COMMENT_SYNTAX  = SQLDialect.supportedBy(MARIADB, MYSQL);
+    static final Set<SQLDialect>         SUPPORTS_HASH_COMMENT_SYNTAX             = SQLDialect.supportedBy(MARIADB, MYSQL);
+    static final Set<SQLDialect>         NO_SUPPORT_QUOTED_BUILT_IN_FUNCION_NAMES = SQLDialect.supportedBy(DERBY, HSQLDB);
 
     final Queries parse() {
         return wrap(() -> {