diff --git a/trunk/src/com/jpexs/decompiler/flash/abc/types/InstanceInfo.java b/trunk/src/com/jpexs/decompiler/flash/abc/types/InstanceInfo.java
index 056e0c867..137226e20 100644
--- a/trunk/src/com/jpexs/decompiler/flash/abc/types/InstanceInfo.java
+++ b/trunk/src/com/jpexs/decompiler/flash/abc/types/InstanceInfo.java
@@ -79,7 +79,7 @@ public class InstanceInfo {
         if (isFinal()) {
             modifiers += "final ";
         }
-        if (isDynamic()) {
+        if (!isInterface() && isDynamic()) {
             modifiers += "dynamic ";
         }
         String objType = "class ";