diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/SwapIns.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/SwapIns.java
index 3b5943fad..708838434 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/SwapIns.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/instructions/stack/SwapIns.java
@@ -149,6 +149,12 @@ public class SwapIns extends InstructionDefinition {
             return;
         }
         
+        if (o2 instanceof DuplicateSourceItem) {
+            stack.push(o1);
+            stack.push(o2);
+            return;
+        }
+        
         
         int temp = localData.maxTempIndex.getVal() + 1;
         localData.maxTempIndex.setVal(temp);