diff --git a/jOOQ/src/main/java/org/jooq/impl/InsertQueryImpl.java b/jOOQ/src/main/java/org/jooq/impl/InsertQueryImpl.java
index 8f2bff1a27..0e2a85f0cb 100644
--- a/jOOQ/src/main/java/org/jooq/impl/InsertQueryImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/InsertQueryImpl.java
@@ -349,7 +349,7 @@ implements
                     // [#7552] Dialects supporting both MERGE and ON CONFLICT should
                     //         generate MERGE to emulate MySQL's ON DUPLICATE KEY UPDATE
                     //         if there are multiple known unique constraints.
-                    if (ctx.dialect().supports(POSTGRES_15)
+                    if (ctx.dialect().supports(POSTGRES)
                             && onConstraint == null
                             && onConflict == null
                             && returning.isEmpty()