diff --git a/src/com/jpexs/decompiler/flash/dumpview/DumpInfo.java b/src/com/jpexs/decompiler/flash/dumpview/DumpInfo.java
index a339fceb1..eaff77026 100644
--- a/src/com/jpexs/decompiler/flash/dumpview/DumpInfo.java
+++ b/src/com/jpexs/decompiler/flash/dumpview/DumpInfo.java
@@ -62,6 +62,10 @@ public class DumpInfo {
         this.lengthBits = lengthBits;
     }
 
+    public int getChildCount() {
+        return childInfos == null ? 0 : childInfos.size();
+    }
+    
     public List<DumpInfo> getChildInfos() {
         if (childInfos == null) {
             childInfos = new ArrayList<>();
diff --git a/src/com/jpexs/decompiler/flash/gui/dumpview/DumpTreeModel.java b/src/com/jpexs/decompiler/flash/gui/dumpview/DumpTreeModel.java
index 62789f675..8bb7c9ce8 100644
--- a/src/com/jpexs/decompiler/flash/gui/dumpview/DumpTreeModel.java
+++ b/src/com/jpexs/decompiler/flash/gui/dumpview/DumpTreeModel.java
@@ -55,12 +55,12 @@ public class DumpTreeModel implements TreeModel {
 
     @Override
     public int getChildCount(Object o) {
-        return ((DumpInfo) o).getChildInfos().size();
+        return ((DumpInfo) o).getChildCount();
     }
 
     @Override
     public boolean isLeaf(Object o) {
-        return ((DumpInfo) o).getChildInfos().isEmpty();
+        return ((DumpInfo) o).getChildCount() == 0;
     }
 
     @Override