diff --git a/include/bgfx.h b/include/bgfx.h
index 124f67c9..7eee30a2 100644
--- a/include/bgfx.h
+++ b/include/bgfx.h
@@ -311,6 +311,8 @@ namespace bgfx
 	/// Vertex declaration.
 	struct VertexDecl
 	{
+		VertexDecl();
+
 		/// Start VertexDecl.
 		VertexDecl& begin(RendererType::Enum _renderer = RendererType::Null);
 
diff --git a/src/vertexdecl.cpp b/src/vertexdecl.cpp
index abdee998..dd00ce3c 100644
--- a/src/vertexdecl.cpp
+++ b/src/vertexdecl.cpp
@@ -83,6 +83,12 @@ namespace bgfx
 		va_end(argList);
 	}
 
+	VertexDecl::VertexDecl()
+	{
+		// BK - struct need to have ctor to qualify as non-POD data.
+		// Need this to catch programming errors when serializing struct.
+	}
+
 	VertexDecl& VertexDecl::begin(RendererType::Enum _renderer)
 	{
 		m_hash = _renderer; // use hash to store renderer type while building VertexDecl.