diff --git a/trunk/src/com/jpexs/decompiler/flash/BinarySWFBundle.java b/trunk/src/com/jpexs/decompiler/flash/BinarySWFBundle.java
index 2ea2d85d3..87d5693d6 100644
--- a/trunk/src/com/jpexs/decompiler/flash/BinarySWFBundle.java
+++ b/trunk/src/com/jpexs/decompiler/flash/BinarySWFBundle.java
@@ -33,8 +33,8 @@ public class BinarySWFBundle implements SWFBundle {
 
     private final SWFSearch search;
 
-    public BinarySWFBundle(InputStream is) {
-        search = new SWFSearch(new StreamSearch(is));
+    public BinarySWFBundle(InputStream is, boolean noCheck) {
+        search = new SWFSearch(new StreamSearch(is), noCheck);
         search.process();
     }
 
diff --git a/trunk/src/com/jpexs/decompiler/flash/SWF.java b/trunk/src/com/jpexs/decompiler/flash/SWF.java
index 4db780229..96da9fe18 100644
--- a/trunk/src/com/jpexs/decompiler/flash/SWF.java
+++ b/trunk/src/com/jpexs/decompiler/flash/SWF.java
@@ -335,7 +335,7 @@ public final class SWF implements TreeItem {
      * @throws java.lang.InterruptedException
      */
     public SWF(InputStream is, ProgressListener listener, boolean parallelRead) throws IOException, InterruptedException {
-        this(is, listener, parallelRead, false);
+        this(is, listener, parallelRead, false, false);
     }
 
     /**
@@ -348,7 +348,7 @@ public final class SWF implements TreeItem {
      * @throws IOException
      * @throws java.lang.InterruptedException
      */
-    public SWF(InputStream is, ProgressListener listener, boolean parallelRead, boolean checkOnly) throws IOException, InterruptedException {
+    public SWF(InputStream is, ProgressListener listener, boolean parallelRead, boolean checkOnly, boolean skipTagReading) throws IOException, InterruptedException {
         byte[] hdr = new byte[3];
         is.read(hdr);
         String shdr = new String(hdr, Utf8Helper.charset);
@@ -411,8 +411,8 @@ public final class SWF implements TreeItem {
         sis.readUI8(); //tmpFirstByetOfFrameRate
         frameRate = sis.readUI8();
         frameCount = sis.readUI16();
-        if (checkOnly) {
-            //return;
+        if (skipTagReading) {
+            return;
         }
         tags = sis.readTagList(this, 0, parallelRead, true, !checkOnly, gfx);
         if (!checkOnly) {
diff --git a/trunk/src/com/jpexs/decompiler/flash/SWFSearch.java b/trunk/src/com/jpexs/decompiler/flash/SWFSearch.java
index 6f36cbccf..e4c0e671f 100644
--- a/trunk/src/com/jpexs/decompiler/flash/SWFSearch.java
+++ b/trunk/src/com/jpexs/decompiler/flash/SWFSearch.java
@@ -34,12 +34,14 @@ import java.util.Set;
 public class SWFSearch {
 
     protected Searchable s;
+    private boolean noCheck;
     private boolean processed = false;
     private final Set<ProgressListener> listeners = new HashSet<>();
     private final Map<Long, MemoryInputStream> swfStreams = new HashMap<>();
 
-    public SWFSearch(Searchable s) {
+    public SWFSearch(Searchable s, boolean noCheck) {
         this.s = s;
+        this.noCheck = noCheck;
     }
 
     public void addProgressListener(ProgressListener l) {
@@ -77,7 +79,7 @@ public class SWFSearch {
                 MemoryInputStream mis = (MemoryInputStream) ret.get(addr);
                 mis.reset();
                 PosMarkedInputStream pmi = new PosMarkedInputStream(mis);
-                SWF swf = new SWF(pmi, null, false, true);
+                SWF swf = new SWF(pmi, null, false, true, noCheck);
                 long limit = pmi.getPos();
                 MemoryInputStream is = new MemoryInputStream(mis.getAllRead(), (int) (long) addr, (int) limit);
                 if (swf.fileSize > 0 && swf.version > 0 && !swf.tags.isEmpty() && swf.version < 25/*Needs to be fixed when SWF versions reaches this value*/) {
diff --git a/trunk/src/com/jpexs/decompiler/flash/SWFSourceInfo.java b/trunk/src/com/jpexs/decompiler/flash/SWFSourceInfo.java
index 85739c0de..3c03a0dca 100644
--- a/trunk/src/com/jpexs/decompiler/flash/SWFSourceInfo.java
+++ b/trunk/src/com/jpexs/decompiler/flash/SWFSourceInfo.java
@@ -76,7 +76,7 @@ public class SWFSourceInfo {
         return false;
     }
 
-    public SWFBundle getBundle() throws IOException {
+    public SWFBundle getBundle(boolean noCheck) throws IOException {
         if (!isBundle()) {
             return null;
         }
@@ -89,7 +89,7 @@ public class SWFSourceInfo {
             case ".zip":
                 return new ZippedSWFBundle(is);
             default:
-                return new BinarySWFBundle(is);
+                return new BinarySWFBundle(is, noCheck);
         }
     }
 }
diff --git a/trunk/src/com/jpexs/decompiler/flash/console/CommandLineArgumentParser.java b/trunk/src/com/jpexs/decompiler/flash/console/CommandLineArgumentParser.java
index 345240f89..5aaf1c78e 100644
--- a/trunk/src/com/jpexs/decompiler/flash/console/CommandLineArgumentParser.java
+++ b/trunk/src/com/jpexs/decompiler/flash/console/CommandLineArgumentParser.java
@@ -122,7 +122,7 @@ public class CommandLineArgumentParser {
         System.out.println("  ...Compress SWF <infile> and save it to <outfile>");
         System.out.println(" 8) -decompress <infile> <outfile>");
         System.out.println("  ...Decompress <infile> and save it to <outfile>");
-        System.out.println(" 9) -extract <infile> [(all|biggest)]");
+        System.out.println(" 9) -extract <infile> [nocheck] [(all|biggest)]");
         System.out.println("  ...Extracts SWF files from ZIP or other binary files");
         System.out.println(" 10) -renameInvalidIdentifiers (typeNumber|randomWord) <infile> <outfil>e");
         System.out.println("  ...Renames the invalid identifiers in <infile> and save it to <outfile>");
@@ -755,6 +755,15 @@ public class CommandLineArgumentParser {
 
         String fileName = args.remove();
         ExtractMode mode = ExtractMode.ALL;
+
+        boolean noCheck = false;
+        if (args.size() > 0) {
+            if (args.peek().toLowerCase().equals("nocheck")) {
+                noCheck = true;
+                args.remove();
+            }
+        }
+        
         if (args.size() > 0) {
             String modeStr = args.remove().toLowerCase();
             switch (modeStr) {
@@ -770,7 +779,7 @@ public class CommandLineArgumentParser {
                 System.err.println("Error: <infile> should be a bundle. (ZIP or non SWF binary file)");
                 System.exit(1);
             }
-            SWFBundle bundle = sourceInfo.getBundle();
+            SWFBundle bundle = sourceInfo.getBundle(noCheck);
             List<Map.Entry<String, SeekableInputStream>> streamsToExtract = new ArrayList<>();
             Map.Entry<String, SeekableInputStream> biggest = null;
             int biggestSize = 0;
diff --git a/trunk/src/com/jpexs/decompiler/flash/gui/LoadFromMemoryFrame.java b/trunk/src/com/jpexs/decompiler/flash/gui/LoadFromMemoryFrame.java
index 1db9cc0b5..14bc73dbf 100644
--- a/trunk/src/com/jpexs/decompiler/flash/gui/LoadFromMemoryFrame.java
+++ b/trunk/src/com/jpexs/decompiler/flash/gui/LoadFromMemoryFrame.java
@@ -136,7 +136,7 @@ public class LoadFromMemoryFrame extends AppFrame implements ActionListener {
                     try {
                         PosMarkedInputStream pmi = new PosMarkedInputStream(ret.get(addr));
                         ReReadableInputStream is = new ReReadableInputStream(pmi);
-                        SWF swf = new SWF(is, null, false, true);
+                        SWF swf = new SWF(is, null, false, true, false);
                         long limit = pmi.getPos();
                         is.seek(0);
                         is = new ReReadableInputStream(new LimitedInputStream(is, limit));
diff --git a/trunk/src/com/jpexs/decompiler/flash/gui/Main.java b/trunk/src/com/jpexs/decompiler/flash/gui/Main.java
index 3e42a9c23..4aeb2706c 100644
--- a/trunk/src/com/jpexs/decompiler/flash/gui/Main.java
+++ b/trunk/src/com/jpexs/decompiler/flash/gui/Main.java
@@ -230,7 +230,7 @@ public class Main {
         SWFBundle bundle = null;
         if (inputStream == null) {
             inputStream = new BufferedInputStream(new FileInputStream(sourceInfo.getFile()));
-            bundle = sourceInfo.getBundle();
+            bundle = sourceInfo.getBundle(false);
             logger.log(Level.INFO, "Load file: {0}", sourceInfo.getFile());
         } else if (inputStream instanceof SeekableInputStream
                 || inputStream instanceof BufferedInputStream) {