1 files changed, 1 insertions, 1 deletions

diff --git a/enigma/src/main/java/cuchaz/enigma/analysis/StructureTreeNode.java b/enigma/src/main/java/cuchaz/enigma/analysis/StructureTreeNode.java
index c0979f5c..c7a633a0 100644
--- a/enigma/src/main/java/cuchaz/enigma/analysis/StructureTreeNode.java
+++ b/enigma/src/main/java/cuchaz/enigma/analysis/StructureTreeNode.java
@@ -43,7 +43,7 @@ public class StructureTreeNode extends DefaultMutableTreeNode {
         }
 
         public void load(EnigmaProject project, StructureTreeOptions options) {
-                Stream<ParentedEntry<?>> children = project.getJarIndex().getChildrenByClass().get(this.parentEntry).stream();
+                Stream<ParentedEntry<?>> children = project.getJarIndex().getChildrenByClass().getOrDefault(this.parentEntry, List.of()).stream();
 
                 children = switch (options.obfuscationVisibility()) {
                 case ALL -> children;