diff --git a/src/CalcManager/Ratpack/ratpak.h b/src/CalcManager/Ratpack/ratpak.h
index b4d8fab5..cf864195 100644
--- a/src/CalcManager/Ratpack/ratpak.h
+++ b/src/CalcManager/Ratpack/ratpak.h
@@ -20,6 +20,8 @@
 #include <algorithm>
 #include <string>
 #include "CalcErr.h"
+#include <cstring> // for memmove
+#include <sal.h> // for SAL
 
 static constexpr uint32_t BASEXPWR = 31L;// Internal log2(BASEX)
 static constexpr uint32_t BASEX = 0x80000000; // Internal radix used in calculations, hope to raise