diff --git a/jOOQ/src/main/java/org/jooq/InsertSetStep.java b/jOOQ/src/main/java/org/jooq/InsertSetStep.java
index ae6a5600b8..f48ae0efcc 100644
--- a/jOOQ/src/main/java/org/jooq/InsertSetStep.java
+++ b/jOOQ/src/main/java/org/jooq/InsertSetStep.java
@@ -324,5 +324,5 @@ public interface InsertSetStep<R extends Record> {
      * define a field set for insertion.
      */
     @Support
-    InsertReturningStep<R> select(Select<?> select);
+    InsertOnDuplicateStep<R> select(Select<?> select);
 }
diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index 58271970a3..a4da990417 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -899,7 +899,7 @@ class ParserImpl implements Parser {
             SelectQueryImpl<Record> select = parseSelect(ctx);
 
             returning = onDuplicate = (fields == null)
-                ? (InsertOnDuplicateStep<?>) ctx.dsl.insertInto(tableName).select(select)
+                ? ctx.dsl.insertInto(tableName).select(select)
                 : ctx.dsl.insertInto(tableName).columns(fields).select(select);
         }
         else if (parseKeywordIf(ctx, "DEFAULT VALUES")) {