diff --git a/UEFIExtract/ffsdumper.cpp b/UEFIExtract/ffsdumper.cpp
index f522727..9b6096b 100644
--- a/UEFIExtract/ffsdumper.cpp
+++ b/UEFIExtract/ffsdumper.cpp
@@ -109,28 +109,31 @@ USTATUS FfsDumper::recursiveDump(const UModelIndex & index, const UString & path
                         fileIndex = index;
                 }
 
-                fileList.insert(fileIndex);
+                // We may select parent file during ffs extraction.
+                if (fileList.count(fileIndex) == 0) {
+                    fileList.insert(fileIndex);
 
-                UString filename;
-                if (counterRaw == 0)
-                    filename = usprintf("%s/file.ffs", path.toLocal8Bit());
-                else
-                    filename = usprintf("%s/file_%d.ffs", path.toLocal8Bit(), counterRaw);
-                counterRaw++;
+                    UString filename;
+                    if (counterRaw == 0)
+                        filename = usprintf("%s/file.ffs", path.toLocal8Bit());
+                    else
+                        filename = usprintf("%s/file_%d.ffs", path.toLocal8Bit(), counterRaw);
+                    counterRaw++;
 
-                std::ofstream file(filename.toLocal8Bit(), std::ofstream::binary);
-                if (!file)
-                    return U_FILE_OPEN;
+                    std::ofstream file(filename.toLocal8Bit(), std::ofstream::binary);
+                    if (!file)
+                        return U_FILE_OPEN;
 
-                const UByteArray &headerData = model->header(fileIndex);
-                const UByteArray &bodyData = model->body(fileIndex);
-                const UByteArray &tailData = model->tail(fileIndex);
+                    const UByteArray &headerData = model->header(fileIndex);
+                    const UByteArray &bodyData = model->body(fileIndex);
+                    const UByteArray &tailData = model->tail(fileIndex);
 
-                file.write(headerData.constData(), headerData.size());
-                file.write(bodyData.constData(), bodyData.size());
-                file.write(tailData.constData(), tailData.size());
+                    file.write(headerData.constData(), headerData.size());
+                    file.write(bodyData.constData(), bodyData.size());
+                    file.write(tailData.constData(), tailData.size());
 
-                dumped = true;
+                    dumped = true;
+                }
             }
         }