diff --git a/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataexport/AbstractBlockTypeExporter.java b/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataexport/AbstractBlockTypeExporter.java
index 1d1141d7cd..53524a5314 100644
--- a/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataexport/AbstractBlockTypeExporter.java
+++ b/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataexport/AbstractBlockTypeExporter.java
@@ -247,7 +247,7 @@ private void addService(final FBType sfb) throws XMLStreamException {
 					sfb.getService().getRightInterface().getName());
 			getWriter().writeAttribute(LibraryElementTags.LEFT_INTERFACE_ATTRIBUTE,
 					sfb.getService().getLeftInterface().getName());
-			addCommentAttribute(sfb.getComment());
+			addCommentAttribute(sfb.getService().getComment());
 
 			addServiceSequences(sfb.getService().getServiceSequence());
 
diff --git a/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataimport/FBTImporter.java b/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataimport/FBTImporter.java
index 9580f26b2e..789e14052d 100644
--- a/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataimport/FBTImporter.java
+++ b/plugins/org.eclipse.fordiac.ide.model/src/org/eclipse/fordiac/ide/model/dataimport/FBTImporter.java
@@ -199,7 +199,7 @@ protected void parseService(final FBType type) throws TypeImportException, XMLSt
 		type.getService().setLeftInterface(leftInter);
 		final String comment = getAttributeValue(LibraryElementTags.COMMENT_ATTRIBUTE);
 		if (null != comment) {
-			type.setComment(comment);
+			type.getService().setComment(comment);
 		}
 
 		processChildren(LibraryElementTags.SERVICE_ELEMENT, name -> {