diff --git a/src/main/java/org/olat/ims/qti21/ui/QTI21AssessmentDetailsController.java b/src/main/java/org/olat/ims/qti21/ui/QTI21AssessmentDetailsController.java
index 517fef906a1c57d32b52e42caa5a565887421b15..590206633c4cfa016e426674ccdbad8a8d3baebc 100644
--- a/src/main/java/org/olat/ims/qti21/ui/QTI21AssessmentDetailsController.java
+++ b/src/main/java/org/olat/ims/qti21/ui/QTI21AssessmentDetailsController.java
@@ -276,9 +276,11 @@ public class QTI21AssessmentDetailsController extends FormBasicController {
 					.booleanValue();
 			infos.add(forgeDetailsRow(sessionStatistics));
 		}
-		correctionCol.setAlwaysVisible(manualCorrections);
-		correctionCol.setDefaultVisible(manualCorrections);
-		tableEl.setColumnModelVisible(correctionCol, manualCorrections);
+		if(correctionCol != null) {
+			correctionCol.setAlwaysVisible(manualCorrections);
+			correctionCol.setDefaultVisible(manualCorrections);
+			tableEl.setColumnModelVisible(correctionCol, manualCorrections);
+		}
 		
 		Collections.sort(infos, new AssessmentTestSessionDetailsComparator());
 		tableModel.setObjects(infos);