diff --git a/trunk/src/com/jpexs/asdec/abc/types/Multiname.java b/trunk/src/com/jpexs/asdec/abc/types/Multiname.java
index 16113ef43..682962cb9 100644
--- a/trunk/src/com/jpexs/asdec/abc/types/Multiname.java
+++ b/trunk/src/com/jpexs/asdec/abc/types/Multiname.java
@@ -153,7 +153,9 @@ public class Multiname {
                if(i>0){
                   typeNameStr+=",";
                }
-               typeNameStr+=constants.constant_multiname[params.get(i)].getName(constants);
+               if(params.get(i)!=0){ //What does value 0 mean?
+                  typeNameStr+=constants.constant_multiname[params.get(i)].getName(constants);
+               }
             }
             typeNameStr+=">";
          }