1 files changed, 6 insertions, 1 deletions
diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/wizard/page/LectureImageListPage.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/wizard/page/LectureImageListPage.java
index 3b4935cb..1c35df7b 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/wizard/page/LectureImageListPage.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/wizard/page/LectureImageListPage.java
@@ -15,6 +15,7 @@ import org.openslx.dozmod.gui.wizard.layout.LectureImageListPageLayout;
 import org.openslx.dozmod.permissions.ImagePerms;
 import org.openslx.dozmod.state.LectureWizardState;
 import org.openslx.dozmod.thrift.cache.ImageCache;
+import org.openslx.dozmod.util.ContainerUtils;
 import org.openslx.util.QuickTimer;
 import org.openslx.util.QuickTimer.Task;
 
@@ -90,7 +91,11 @@ public class LectureImageListPage extends LectureImageListPageLayout {
 
 	private boolean isPageValid() {
 		ImageSummaryRead selected = imageTable.getSelectedItem();
-		if (selected != null && selected.isValid && ImagePerms.canLink(selected)) {
+		if (ContainerUtils.isContainerImageLinked(selected)) {
+			setErrorMessage(I18n.PAGE.getString("LectureImageList.WizardPage.errorMessage.containerLinkedWithLecture"));
+			return false;
+		}
+		else if (selected != null && selected.isValid && ImagePerms.canLink(selected)) {
 			state.image = selected;
 			state.imageVersionId = selected.getLatestVersionId();
 			setDescription(I18n.PAGE.getString("LectureImageList.WizardPage.description"));