diff --git a/telldus-core/common/Strings.cpp b/telldus-core/common/Strings.cpp
index fe0b7ca1..c563fa49 100644
--- a/telldus-core/common/Strings.cpp
+++ b/telldus-core/common/Strings.cpp
@@ -144,6 +144,14 @@ std::wstring TelldusCore::intToWStringSafe(int value){
 }
 */
 
+uint64_t TelldusCore::hexTo64l(const std::string data){
+#ifdef _WINDOWS
+	return _strtoui64(data.c_str(), NULL, 16);
+#else
+	return strtol(data.c_str(), NULL, 16);
+#endif
+}
+
 int TelldusCore::wideToInteger(const std::wstring &input){
 	std::wstringstream inputstream;
 	inputstream << input;
diff --git a/telldus-core/common/Strings.h b/telldus-core/common/Strings.h
index ad898424..7c5f85ad 100644
--- a/telldus-core/common/Strings.h
+++ b/telldus-core/common/Strings.h
@@ -3,6 +3,14 @@
 
 #include <string>
 #include <stdarg.h>
+#ifdef _MSC_VER
+typedef unsigned __int8 uint8_t;
+typedef unsigned __int16 uint16_t;
+typedef unsigned __int32 uint32_t;
+typedef unsigned __int64 uint64_t;
+#else
+#include <stdint.h>
+#endif
 
 namespace TelldusCore {
 	std::wstring charToWstring(const char *value);
@@ -13,6 +21,7 @@ namespace TelldusCore {
 	std::wstring intToWstring(int value);
 	//std::wstring intToWStringSafe(int value);
 	std::string intToString(int value);
+	uint64_t hexTo64l(const std::string data);
 	std::string wideToString(const std::wstring &input);
 
 	int wideToInteger(const std::wstring &input);
diff --git a/telldus-core/service/ProtocolFineoffset.cpp b/telldus-core/service/ProtocolFineoffset.cpp
index 31d150a0..4ed310d0 100644
--- a/telldus-core/service/ProtocolFineoffset.cpp
+++ b/telldus-core/service/ProtocolFineoffset.cpp
@@ -1,13 +1,8 @@
 #include "ProtocolFineoffset.h"
+#include "Strings.h"
 #include <stdlib.h>
 #include <sstream>
 #include <iomanip>
-#ifdef _MSC_VER
-typedef unsigned __int8 uint8_t;
-typedef unsigned __int16 uint16_t;
-#else
-#include <stdint.h>
-#endif
 
 std::string ProtocolFineoffset::decodeData(ControllerMessage &dataMsg)
 {
@@ -16,13 +11,13 @@ std::string ProtocolFineoffset::decodeData(ControllerMessage &dataMsg)
 		return "";
 	}
 
-	uint8_t checksum = strtol(data.substr(data.length()-2).c_str(), NULL, 16);
+	uint8_t checksum = (uint8_t)TelldusCore::hexTo64l(data.substr(data.length()-2));
 	data = data.substr(0, data.length()-2);
 
-	uint8_t humidity = strtol(data.substr(data.length()-2).c_str(), NULL, 16);
+	uint8_t humidity = (uint8_t)TelldusCore::hexTo64l(data.substr(data.length()-2));
 	data = data.substr(0, data.length()-2);
 
-	uint16_t value = strtol(data.substr(data.length()-3).c_str(), NULL, 16);
+	uint16_t value = (uint16_t)TelldusCore::hexTo64l(data.substr(data.length()-3));
 	double temperature = (value & 0x7FF)/10.0;
 
 	value >>= 11;
@@ -31,7 +26,7 @@ std::string ProtocolFineoffset::decodeData(ControllerMessage &dataMsg)
 	}
 	data = data.substr(0, data.length()-3);
 
-	uint16_t id = strtol(data.c_str(), NULL, 16) & 0xFF;
+	uint16_t id = (uint16_t)TelldusCore::hexTo64l(data) & 0xFF;
 
 	std::stringstream retString;
 	retString << "class:sensor;protocol:fineoffset;id:" << id << ";model:";
diff --git a/telldus-core/service/ProtocolMandolyn.cpp b/telldus-core/service/ProtocolMandolyn.cpp
index 420d6bdb..b8f5aae5 100644
--- a/telldus-core/service/ProtocolMandolyn.cpp
+++ b/telldus-core/service/ProtocolMandolyn.cpp
@@ -1,19 +1,13 @@
 #include "ProtocolMandolyn.h"
+#include "Strings.h"
 #include <stdlib.h>
 #include <sstream>
 #include <iomanip>
 
-#ifdef _MSC_VER
-typedef unsigned __int8 uint8_t;
-typedef unsigned __int32 uint32_t;
-#else
-#include <stdint.h>
-#endif
-
 std::string ProtocolMandolyn::decodeData(ControllerMessage &dataMsg)
 {
 	std::string data = dataMsg.getParameter("data");
-	uint32_t value = strtol(data.c_str(), NULL, 16);
+	uint32_t value = (uint32_t)TelldusCore::hexTo64l(data);
 
 	bool parity = value & 0x1;
 	value >>= 1;
diff --git a/telldus-core/service/ProtocolOregon.cpp b/telldus-core/service/ProtocolOregon.cpp
index 704ebeeb..c5847952 100644
--- a/telldus-core/service/ProtocolOregon.cpp
+++ b/telldus-core/service/ProtocolOregon.cpp
@@ -1,13 +1,8 @@
 #include "ProtocolOregon.h"
+#include "Strings.h"
 #include <stdlib.h>
 #include <sstream>
 #include <iomanip>
-#ifdef _MSC_VER
-typedef unsigned __int8 uint8_t;
-typedef unsigned __int64 uint64_t;
-#else
-#include <stdint.h>
-#endif
 
 std::string ProtocolOregon::decodeData(ControllerMessage &dataMsg)
 {
@@ -24,8 +19,8 @@ std::string ProtocolOregon::decodeData(ControllerMessage &dataMsg)
 }
 
 std::string ProtocolOregon::decodeEA4C(const std::string &data) {
-	uint64_t value = strtol(data.c_str(), NULL, 16);
-
+	uint64_t value = TelldusCore::hexTo64l(data);
+	
 	uint8_t checksum = 0xE + 0xA + 0x4 + 0xC;
 	checksum -= (value & 0xF) * 0x10;
 	checksum -= 0xA;
@@ -69,7 +64,7 @@ std::string ProtocolOregon::decodeEA4C(const std::string &data) {
 }
 
 std::string ProtocolOregon::decode1A2D(const std::string &data) {
-	uint64_t value = strtol(data.c_str(), NULL, 16);
+	uint64_t value = TelldusCore::hexTo64l(data);
 	uint8_t checksum2 = value & 0xFF;
 	value >>= 8;
 	uint8_t checksum1 = value & 0xFF;