diff --git a/src/machine_code.cpp b/src/machine_code.cpp
index 777e1be..29c2c0c 100644
--- a/src/machine_code.cpp
+++ b/src/machine_code.cpp
@@ -135,24 +135,18 @@ std::string getCpuId() {
     return getWMIProperty(L"Win32_Processor", L"ProcessorId");
 }
 
-std::string getDiskSerial() {
-    return getWMIProperty(L"Win32_DiskDrive", L"SerialNumber");
-}
-
 std::string getMacAddress() {
     return getWMIProperty(L"Win32_NetworkAdapterConfiguration", L"MACAddress");
 }
 
 std::string getMachineCode() {
     std::string cpuId = getCpuId();
-    std::string diskSerial = getDiskSerial();
     std::string macAddress = getMacAddress();
 
     // Clean up strings
     cpuId.erase(std::remove_if(cpuId.begin(), cpuId.end(), isspace), cpuId.end());
-    diskSerial.erase(std::remove_if(diskSerial.begin(), diskSerial.end(), isspace), diskSerial.end());
     macAddress.erase(std::remove_if(macAddress.begin(), macAddress.end(), isspace), macAddress.end());
     macAddress.erase(std::remove(macAddress.begin(), macAddress.end(), ':'), macAddress.end());
 
-    return cpuId + "-" + diskSerial + "-" + macAddress;
+    return cpuId + "-" + "-" + macAddress;
 }