diff --git a/jOOQ/src/main/java/org/jooq/impl/AlterTableImpl.java b/jOOQ/src/main/java/org/jooq/impl/AlterTableImpl.java
index e8f5929a22..7678a11baf 100644
--- a/jOOQ/src/main/java/org/jooq/impl/AlterTableImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/AlterTableImpl.java
@@ -1410,7 +1410,8 @@ final class AlterTableImpl extends AbstractQuery implements
 
             case POSTGRES: {
                 AlterTableAlterStep<?> step = ctx.dsl().alterTable(table).alterColumn(alterColumn);
-                ctx.visit(alterColumnType.nullable() ? step.dropNotNull() : step.setNotNull());
+                ctx.visit(alterColumnType.nullable() ? step.dropNotNull() : step.setNotNull())
+                   .sql(';');
                 break;
             }
         }