diff --git a/src/lib/tvgBinaryDesc.h b/src/lib/tvgBinaryDesc.h
index a0189b64..a06727d2 100644
--- a/src/lib/tvgBinaryDesc.h
+++ b/src/lib/tvgBinaryDesc.h
@@ -35,6 +35,7 @@ using TvgBinFlag = TvgBinByte;
 
 
 //Header
+#define TVG_HEADER_SIZE 33                //TVG_HEADER_SIGNATURE_LENGTH + TVG_HEADER_VERSION_LENGTH + 2*SIZE(float) + TVG_HEADER_RESERVED_LENGTH + TVG_HEADER_COMPRESS_SIZE
 #define TVG_HEADER_SIGNATURE "ThorVG"
 #define TVG_HEADER_SIGNATURE_LENGTH 6
 #define TVG_HEADER_VERSION "000400"       //Major 00, Minor 04, Micro 00
diff --git a/src/loaders/tvg/tvgTvgLoader.cpp b/src/loaders/tvg/tvgTvgLoader.cpp
index 8916b92c..a15dda6a 100644
--- a/src/loaders/tvg/tvgTvgLoader.cpp
+++ b/src/loaders/tvg/tvgTvgLoader.cpp
@@ -50,6 +50,9 @@ bool TvgLoader::readHeader()
 {
     if (!ptr) return false;
 
+    //Make sure the size is large enough to hold the header
+    if (size < TVG_HEADER_SIZE) return false;
+
     //1. Signature
     if (memcmp(ptr, TVG_HEADER_SIGNATURE, TVG_HEADER_SIGNATURE_LENGTH)) return false;
     ptr += TVG_HEADER_SIGNATURE_LENGTH;
@@ -225,4 +228,4 @@ unique_ptr<Paint> TvgLoader::paint()
     this->done();
     if (root) return move(root);
     return nullptr;
-}
\ No newline at end of file
+}