diff --git a/memory/ram.cpp b/memory/ram.cpp
index d430a43..123a4f4 100644
--- a/memory/ram.cpp
+++ b/memory/ram.cpp
@@ -1,7 +1,9 @@
 #include "ram.h"
+#include <cstring>
 
 RAM::RAM(u16 size) : size(size), readonly(false) {
   memory = new u8[size];
+  std::memset(memory, 0, sizeof(u8) * size);
 }
 
 RAM::RAM(u8* memory, u16 size, bool readonly)