diff --git a/jOOQ/src/main/java/org/jooq/impl/AbstractDataType.java b/jOOQ/src/main/java/org/jooq/impl/AbstractDataType.java
index 05f6daf48e..16f0785b05 100644
--- a/jOOQ/src/main/java/org/jooq/impl/AbstractDataType.java
+++ b/jOOQ/src/main/java/org/jooq/impl/AbstractDataType.java
@@ -39,6 +39,7 @@ package org.jooq.impl;
 
 import static org.jooq.Nullability.NOT_NULL;
 import static org.jooq.SQLDialect.DERBY;
+import static org.jooq.SQLDialect.FIREBIRD;
 // ...
 // ...
 import static org.jooq.impl.DSL.unquotedName;
@@ -93,14 +94,14 @@ import org.jooq.types.UNumber;
 /**
  * @author Lukas Eder
  */
-@SuppressWarnings({ "rawtypes", "unchecked", "deprecation" })
+@SuppressWarnings({ "rawtypes", "unchecked" })
 abstract class AbstractDataType<T> extends AbstractNamed implements DataType<T> {
 
     /**
      * Generated UID
      */
     private static final long            serialVersionUID               = 4155588654449505119L;
-    private static final Set<SQLDialect> NO_SUPPORT_TIMESTAMP_PRECISION = SQLDialect.supportedBy(DERBY);
+    private static final Set<SQLDialect> NO_SUPPORT_TIMESTAMP_PRECISION = SQLDialect.supportedBy(DERBY, FIREBIRD);
 
     AbstractDataType(Name name, Comment comment) {
         super(name, comment);