diff --git a/LEGO1/mxramstreamcontroller.cpp b/LEGO1/mxramstreamcontroller.cpp
new file mode 100644
index 00000000..a96046a0
--- /dev/null
+++ b/LEGO1/mxramstreamcontroller.cpp
@@ -0,0 +1,3 @@
+#include "mxramstreamcontroller.h"
+
+DECOMP_SIZE_ASSERT(MxRAMStreamController, 0x98);
diff --git a/LEGO1/mxramstreamcontroller.h b/LEGO1/mxramstreamcontroller.h
index 09915cbf..563d9cb6 100644
--- a/LEGO1/mxramstreamcontroller.h
+++ b/LEGO1/mxramstreamcontroller.h
@@ -1,11 +1,18 @@
 #ifndef MXRAMSTREAMCONTROLLER_H
 #define MXRAMSTREAMCONTROLLER_H
 
+#include "mxdsbuffer.h"
 #include "mxstreamcontroller.h"
 
 // VTABLE 0x100dc728
+// SIZE 0x98
 class MxRAMStreamController : public MxStreamController
 {
+public:
+  inline MxRAMStreamController() {}
+
+private:
+  MxDSBuffer m_buffer;
 
 };