diff --git a/src/ncmcrypt.cpp b/src/ncmcrypt.cpp
index e2c7c73..d36fd1d 100644
--- a/src/ncmcrypt.cpp
+++ b/src/ncmcrypt.cpp
@@ -403,10 +403,8 @@ NeteaseCrypt::NeteaseCrypt(std::string const &path)
 
     if (n > 0)
     {
-        char *imageData = (char *)malloc(n);
-        read(imageData, n);
-
-        mImageData = std::string(imageData, n);
+        mImageData = std::string(n, '\0');
+        read(&mImageData[0], n);
     }
     else
     {