diff --git a/src/main/java/sirius/db/mixing/annotations/Length.java b/src/main/java/sirius/db/mixing/annotations/Length.java
index cbf7d318..84523820 100644
--- a/src/main/java/sirius/db/mixing/annotations/Length.java
+++ b/src/main/java/sirius/db/mixing/annotations/Length.java
@@ -16,6 +16,12 @@
 
 /**
  * Specifies the column length, most probably of string (CHAR) columns.
+ * <p>
+ * This annotation has no effect on properties other than a string, except the columns
+ * definitions for Clickhouse, where the length is used also for other types, for example int,
+ * to define the int size to use.
+ *
+ * @see sirius.db.jdbc.schema.ClickhouseDatabaseDialect
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)