diff --git a/src/CalcManager/CalculatorManager.cpp b/src/CalcManager/CalculatorManager.cpp
index b4b4dfaf..692b5dac 100644
--- a/src/CalcManager/CalculatorManager.cpp
+++ b/src/CalcManager/CalculatorManager.cpp
@@ -6,6 +6,8 @@
 #include "CalculatorManager.h"
 #include "CalculatorResource.h"
 
+#include <climits>
+
 using namespace std;
 using namespace CalcEngine;
 
diff --git a/src/CalcManager/UnitConverter.cpp b/src/CalcManager/UnitConverter.cpp
index af53e7f5..92bfa907 100644
--- a/src/CalcManager/UnitConverter.cpp
+++ b/src/CalcManager/UnitConverter.cpp
@@ -5,6 +5,8 @@
 #include "Command.h"
 #include "UnitConverter.h"
 
+#include <cmath>
+
 using namespace std;
 using namespace UnitConversionManager;