diff --git a/vm/bignum.cpp b/vm/bignum.cpp
index 3f13a3396b..93bdaf8a1d 100755
--- a/vm/bignum.cpp
+++ b/vm/bignum.cpp
@@ -50,11 +50,6 @@
 
 #include "master.hpp"
 
-#include <limits>
-
-#include <stdio.h>
-#include <math.h>
-
 namespace factor
 {
 
diff --git a/vm/master.hpp b/vm/master.hpp
index 47fcc4dbf6..3eaefc77b8 100755
--- a/vm/master.hpp
+++ b/vm/master.hpp
@@ -36,6 +36,8 @@
 #include <vector>
 #include <iostream>
 #include <iomanip>
+#include <limits>
+
 
 #define FACTOR_STRINGIZE_I(x) #x
 #define FACTOR_STRINGIZE(x) FACTOR_STRINGIZE_I(x)