1 files changed, 2 insertions, 1 deletions
diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java b/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
index eeaae891..0e5a1d15 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
@@ -27,7 +27,8 @@ public class ContainerUtils {
 		if (image != null && image.getVirtId().equals(TConst.VIRT_DOCKER)) {
 			List<LectureSummary> lectureSummaries = LectureCache.get(true);
 			for (LectureSummary lecture : lectureSummaries) {
-				if (lecture.imageBaseId.equals(image.imageBaseId)) {
+				// lecture.imageBaseId is null when no image linked to it -> NullPointer on equals
+				if (image.imageBaseId.equals(lecture.imageBaseId)) {
 					return true;
 				}
 			}