diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef93694b3..bc8ccfec4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,7 @@ All notable changes to this project will be documented in this file.
 - [#2086] AS3 direct editation - not deleting old nested methods when they have multiple usages
 - [#2009] Missing images in MacOs icon
 - AS3 Initialization of var in script initializer
+- AS3 Nullpointer on getting multiname which is out of bounds
 
 ### Changed
 - [#2070] String values inside SWF to XML export are backslash escaped 
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ABC.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ABC.java
index 0f525f1e6..2e81b8b6a 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ABC.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/ABC.java
@@ -476,8 +476,8 @@ public class ABC implements Openable {
             for (int ip = 0; ip < body.getCode().code.size(); ip++) {
                 if (body.getCode().code.get(ip).definition instanceof CallPropertyIns) {
                     int mIndex = body.getCode().code.get(ip).operands[0];
-                    if (mIndex > 0) {
-                        Multiname m = constants.getMultiname(mIndex);
+                    if (mIndex > 0 && mIndex < constants.getMultinameCount()) {
+                        Multiname m = constants.getMultiname(mIndex);                        
                         if (m.getNameWithNamespace(constants, true).toRawString().equals("flash.utils.getDefinitionByName")) {
                             if (ip > 0) {
                                 if (body.getCode().code.get(ip - 1).definition instanceof PushStringIns) {