diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f299b9..36c2587 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Ensure that when exporting older versions of REXS "°" is used instead of the newer "deg"
 - ModellingGuidelineValidator: check in case of interference_fit of feather_key_connection
+- RexsStandardRelationTypes: Roles for "coupling" relation corrected
 
 
 ## [0.15.0] - 2026-03-11
diff --git a/api/src/main/java/info/rexs/schema/constants/standard/RexsStandardRelationTypes.java b/api/src/main/java/info/rexs/schema/constants/standard/RexsStandardRelationTypes.java
index f55a5b7..08b81bd 100644
--- a/api/src/main/java/info/rexs/schema/constants/standard/RexsStandardRelationTypes.java
+++ b/api/src/main/java/info/rexs/schema/constants/standard/RexsStandardRelationTypes.java
@@ -78,7 +78,7 @@ public interface RexsStandardRelationTypes {
 	RexsRelationType connection = RexsRelationType.create("connection", RexsStandardRelationRoles.side_1, RexsStandardRelationRoles.side_2);
 
 	/** Relation type "coupling". */
-	RexsRelationType coupling = RexsRelationType.create("coupling", RexsStandardRelationRoles.side_1, RexsStandardRelationRoles.side_2);
+	RexsRelationType coupling = RexsRelationType.create("coupling", RexsStandardRelationRoles.assembly, RexsStandardRelationRoles.side_1, RexsStandardRelationRoles.side_2);
 
 	/** Relation type "ordered_reference". */
 	RexsRelationType ordered_reference = RexsRelationType.create("ordered_reference", RexsStandardRelationRoles.origin, RexsStandardRelationRoles.referenced);