diff --git a/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp b/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
index 0b8fe83e..d9c05412 100644
--- a/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
+++ b/Controllers/ENESMBusController/ENESMBusInterface/ENESMBusInterface_SpectrixS40G_Windows.cpp
@@ -98,7 +98,7 @@ unsigned char ENESMBusInterface_SpectrixS40G::ENERegisterRead(ene_dev_id dev, en
         DWORD bytesreturned = 0;
         while(bytesreturned != sizeof(buffer))
         {
-            bool result = DeviceIoControl(nvme_fd, IOCTL_STORAGE_PROTOCOL_COMMAND, buffer, sizeof(buffer), buffer, sizeof(buffer), &bytesreturned, (LPOVERLAPPED)0x0);
+            DeviceIoControl(nvme_fd, IOCTL_STORAGE_PROTOCOL_COMMAND, buffer, sizeof(buffer), buffer, sizeof(buffer), &bytesreturned, (LPOVERLAPPED)0x0);
         }
 
         /*-----------------------------------------------------------------------------*\
@@ -107,7 +107,7 @@ unsigned char ENESMBusInterface_SpectrixS40G::ENERegisterRead(ene_dev_id dev, en
         \*-----------------------------------------------------------------------------*/
         memcpy(ExtraValue, &command->Command + sizeof(NVME_COMMAND), sizeof(ExtraValue));
 
-        return(ExtraValue[16]);
+        return((unsigned char)ExtraValue[16]);
     }
 
 }
diff --git a/Controllers/NVIDIAIlluminationController/NVIDIAIlluminationControllerDetect.cpp b/Controllers/NVIDIAIlluminationController/NVIDIAIlluminationControllerDetect.cpp
index e189e244..ef15efbd 100644
--- a/Controllers/NVIDIAIlluminationController/NVIDIAIlluminationControllerDetect.cpp
+++ b/Controllers/NVIDIAIlluminationController/NVIDIAIlluminationControllerDetect.cpp
@@ -67,7 +67,7 @@ bool DetectNVIDIAIllumGPUs()
     NV_U32                          revision_id;
     NV_U32                          sub_system_id;
 
-    NV_STATUS initialize = NvAPI_Initialize();
+    NvAPI_Initialize();
 
     NvAPI_EnumPhysicalGPUs(gpu_handles, &gpu_count);
 
diff --git a/Controllers/NVIDIAIlluminationController/RGBController_NVIDIAIllumination.cpp b/Controllers/NVIDIAIlluminationController/RGBController_NVIDIAIllumination.cpp
index 0aad9b23..e12cdbc4 100644
--- a/Controllers/NVIDIAIlluminationController/RGBController_NVIDIAIllumination.cpp
+++ b/Controllers/NVIDIAIlluminationController/RGBController_NVIDIAIllumination.cpp
@@ -163,6 +163,13 @@ void RGBController_NVIDIAIlluminationV1::SetupZones()
 
 }
 
+void RGBController_NVIDIAIlluminationV1::ResizeZone(int /*zone*/, int /*new_size*/)
+{
+    /*---------------------------------------------------------*\
+    | This device does not support resizing zones               |
+    \*---------------------------------------------------------*/
+}
+
 void RGBController_NVIDIAIlluminationV1::DeviceUpdateLEDs()
 {
     NVIDIAIllumination_Config nv_zone_config;
@@ -203,8 +210,3 @@ void RGBController_NVIDIAIlluminationV1::DeviceUpdateMode()
 {
     DeviceUpdateLEDs();
 }
-
-void RGBController_NVIDIAIlluminationV1::ResizeZone(int zone, int new_size)
-{
-
-}
diff --git a/qt/OpenRGBDevicePage.cpp b/qt/OpenRGBDevicePage.cpp
index 437940ec..30af80b1 100644
--- a/qt/OpenRGBDevicePage.cpp
+++ b/qt/OpenRGBDevicePage.cpp
@@ -92,10 +92,10 @@ OpenRGBDevicePage::OpenRGBDevicePage(RGBController *dev, QWidget *parent) :
     ui->ModeBox->blockSignals(true);
     ui->ModeBox->clear();
 
-    for (std::size_t i = 0; i < device->modes.size(); i++)
+    for(std::size_t i = 0; i < device->modes.size(); i++)
     {
         ui->ModeBox->addItem(device->modes[i].name.c_str());
-        ui->ModeBox->setItemData(i, ModeDescription(device->modes[i]), Qt::ToolTipRole);
+        ui->ModeBox->setItemData((int)i, ModeDescription(device->modes[i]), Qt::ToolTipRole);
     }
 
     ui->ModeBox->setCurrentIndex(device->GetMode());
@@ -179,7 +179,7 @@ void Ui::OpenRGBDevicePage::on_ZoneBox_currentIndexChanged(int /*index*/)
                         if(MultipleSelected) // Preserve the multiple() option
                         {
                             ui->LEDBox->addItem(msLine);
-                            ui->LEDBox->setCurrentIndex(device->leds.size());
+                            ui->LEDBox->setCurrentIndex((int)device->leds.size());
                         }
 
                         ui->ResizeButton->setEnabled(false);
@@ -276,7 +276,7 @@ void Ui::OpenRGBDevicePage::on_LEDBox_currentIndexChanged(int index)
                         {
                             if(MultipleSelected)
                             {
-                                ui->LEDBox->removeItem(device->leds.size() + 1);
+                                ui->LEDBox->removeItem((int)(device->leds.size() + 1));
                             }
                             MultipleSelected = 0;
                             color = device->GetLED(index); // One LED, proceed
@@ -1038,11 +1038,11 @@ void Ui::OpenRGBDevicePage::on_DeviceViewBox_selectionChanged(QVector<int> indic
         {
             if(MultipleSelected)
             {
-                ui->LEDBox->removeItem(device->leds.size() + 1);
+                ui->LEDBox->removeItem((int)(device->leds.size() + 1));
             }
             // TODO: translate
             ui->LEDBox->addItem("Multiple (" + QVariant(indices.size()).toString() + ")");
-            ui->LEDBox->setCurrentIndex(device->leds.size() + 1);
+            ui->LEDBox->setCurrentIndex((int)(device->leds.size() + 1));
             MultipleSelected = 1;
         }
     }
@@ -1106,7 +1106,7 @@ void Ui::OpenRGBDevicePage::on_ResizeButton_clicked()
         {
             OpenRGBZoneResizeDialog dlg(device->modes[device->active_mode].colors_min,
                                         device->modes[device->active_mode].colors_max,
-                                        device->modes[device->active_mode].colors.size());
+                                        (int)device->modes[device->active_mode].colors.size());
 
             int new_size = dlg.show();
 
diff --git a/qt/OpenRGBDialog2.cpp b/qt/OpenRGBDialog2.cpp
index 946ad6ab..c4cbe3fa 100644
--- a/qt/OpenRGBDialog2.cpp
+++ b/qt/OpenRGBDialog2.cpp
@@ -1325,9 +1325,9 @@ void OpenRGBDialog2::UpdateDevicesList()
     | Remove all remaining device tabs                      |
     \*-----------------------------------------------------*/
     unsigned int tab_count = ui->DevicesTabBar->count();
-    unsigned int base_tab = controllers.size();
+    unsigned int base_tab = (unsigned int)controllers.size();
 
-    for(unsigned int tab_idx = controllers.size(); tab_idx < tab_count; tab_idx++)
+    for(std::size_t tab_idx = controllers.size(); tab_idx < tab_count; tab_idx++)
     {
         QWidget* tab_widget = ui->DevicesTabBar->widget(base_tab);
 
@@ -1348,7 +1348,7 @@ void OpenRGBDialog2::UpdateDevicesList()
         | Remove all remaining device information tabs, leaving |
         | other information tabs alone                          |
         \*-----------------------------------------------------*/
-        for(int tab_idx = controllers.size(); tab_idx < ui->InformationTabBar->count(); tab_idx++)
+        for(std::size_t tab_idx = controllers.size(); tab_idx < ui->InformationTabBar->count(); tab_idx++)
         {
             std::string type_str = ui->InformationTabBar->widget(base_tab)->metaObject()->className();
             if(type_str == "Ui::OpenRGBDeviceInfoPage")