diff --git a/jOOQ-meta/src/main/java/org/jooq/util/DefaultDataTypeDefinition.java b/jOOQ-meta/src/main/java/org/jooq/util/DefaultDataTypeDefinition.java
index 141def5108..3abefc292d 100644
--- a/jOOQ-meta/src/main/java/org/jooq/util/DefaultDataTypeDefinition.java
+++ b/jOOQ-meta/src/main/java/org/jooq/util/DefaultDataTypeDefinition.java
@@ -35,11 +35,19 @@
 package org.jooq.util;
 
 
+import static java.util.Arrays.asList;
 import static org.jooq.impl.DSL.name;
 import static org.jooq.impl.DefaultDataType.normalise;
 
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
 import org.jooq.Name;
 import org.jooq.SQLDialect;
+import org.jooq.types.UByte;
+import org.jooq.types.UInteger;
+import org.jooq.types.ULong;
+import org.jooq.types.UShort;
 // ...
 
 
@@ -293,6 +301,21 @@ public class DefaultDataTypeDefinition implements DataTypeDefinition {
 
 
 
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