diff --git a/inc/IntelProcessor.h b/inc/IntelProcessor.h
index b2e90ed..29a6dc0 100644
--- a/inc/IntelProcessor.h
+++ b/inc/IntelProcessor.h
@@ -4,8 +4,12 @@
 #include <array>
 
 #include "Processor.h"
+#include "Register.h"
 
 namespace EightBit {
+
+	class Bus;
+
 	class IntelProcessor : public Processor
 	{
 	public:
diff --git a/inc/Memory.h b/inc/Memory.h
index f39a89c..4a38a23 100644
--- a/inc/Memory.h
+++ b/inc/Memory.h
@@ -2,6 +2,7 @@
 
 #include <cstdint>
 #include <vector>
+#include <string>
 
 namespace EightBit {
 	class Memory {