diff --git a/druid/src/main/java/org/apache/calcite/adapter/druid/DruidQuery.java b/druid/src/main/java/org/apache/calcite/adapter/druid/DruidQuery.java
index 73d8b262a82..e6aa27b6bda 100644
--- a/druid/src/main/java/org/apache/calcite/adapter/druid/DruidQuery.java
+++ b/druid/src/main/java/org/apache/calcite/adapter/druid/DruidQuery.java
@@ -101,7 +101,7 @@ public class DruidQuery extends AbstractRelNode implements BindableRel {
   /**
    * Provides a standard list of supported Calcite operators that can be converted to
    * Druid Expressions. This can be used as is or re-adapted based on underline
-   * engine operator syntax.Methods can refer to https://druid.apache.org/docs/latest/querying/
+   * engine operator syntax. Methods can refer to https://druid.apache.org/docs/latest/querying/
    */
   public static final List<DruidSqlOperatorConverter> DEFAULT_OPERATORS_LIST =
       ImmutableList.<DruidSqlOperatorConverter>builder()