diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/parser/pcode/ASM3Parser.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/parser/pcode/ASM3Parser.java
index d8fb66217..a49479211 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/parser/pcode/ASM3Parser.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/parser/pcode/ASM3Parser.java
@@ -351,8 +351,7 @@ public class ASM3Parser {
         expected(ParsedSymbol.TYPE_KEYWORD_SLOTID, "slotid", lexer);
         ParsedSymbol symb;
         symb = lexer.lex();
-        expected(symb, ParsedSymbol.TYPE_NUMBER, "Integer", lexer.yyline());
-        int slotid = (int) (Integer) symb.value;
+        int slotid = (int) getUInteger(symb, lexer.yyline(), false);
 
         expected(ParsedSymbol.TYPE_KEYWORD_CLASS, "class", lexer);
         expected(ParsedSymbol.TYPE_KEYWORD_INSTANCE, "instance", lexer);