diff --git a/jOOQ/src/main/java/org/jooq/AlterTableAlterStep.java b/jOOQ/src/main/java/org/jooq/AlterTableAlterStep.java
index 1745ec4b23..977b955a8d 100644
--- a/jOOQ/src/main/java/org/jooq/AlterTableAlterStep.java
+++ b/jOOQ/src/main/java/org/jooq/AlterTableAlterStep.java
@@ -84,12 +84,12 @@ public interface AlterTableAlterStep<T> {
     /**
      * Make the column <code>NOT NULL</code>.
      */
-    @Support({ POSTGRES })
+    @Support({ H2, POSTGRES })
     AlterTableFinalStep setNotNull();
 
     /**
      * Make the column nullable.
      */
-    @Support({ POSTGRES })
+    @Support({ H2, POSTGRES })
     AlterTableFinalStep dropNotNull();
 }