diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/deobfuscation/ActionDeobfuscator.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/deobfuscation/ActionDeobfuscator.java
index 802b3342c..5db58dbd6 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/deobfuscation/ActionDeobfuscator.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/deobfuscation/ActionDeobfuscator.java
@@ -150,7 +150,15 @@ public class ActionDeobfuscator extends ActionDeobfuscatorSimple {
                 }
                 newIstructionCount += 2 * result.variables.size();
 
-                if (newIstructionCount * 2 < result.instructionsProcessed) {
+                boolean allValueValid = true;
+                for (Object value : result.variables.values()) {
+                    if (!ActionPush.isValidValue(value)) {
+                        allValueValid = false;
+                        break;
+                    }
+                }
+
+                if (allValueValid && newIstructionCount * 2 < result.instructionsProcessed) {
                     Action target = actions.get(result.idx);
                     Action prevAction = actions.get(i);
 
diff --git a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/swf4/ActionPush.java b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/swf4/ActionPush.java
index ab88fd0e1..8ac8e795e 100644
--- a/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/swf4/ActionPush.java
+++ b/libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/swf4/ActionPush.java
@@ -186,6 +186,23 @@ public class ActionPush extends Action {
         return surroundWithAction(baos.toByteArray(), version);
     }
 
+    public static boolean isValidValue(Object value) {
+        if (value instanceof String) {
+            for (char ch : ((String) value).toCharArray()) {
+                if (ch == 0) {
+                    return false;
+                }
+            }
+        }
+        if (value instanceof Long) {
+            long l = (Long) value;
+            if (l < 0x8000000 || l > 0x7ffffff) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     public ActionPush(Object value) {
         super(0x96, 0);
         this.values = new ArrayList<>();