diff --git a/WinPowerDMS/DisplayMode.c b/WinPowerDMS/DisplayMode.c
index 411294e..bff4064 100644
--- a/WinPowerDMS/DisplayMode.c
+++ b/WinPowerDMS/DisplayMode.c
@@ -30,7 +30,7 @@ DISPLAY_MODE GetModeFromCB(HWND hComboBox) {
 
 // returns the result of the ChangeDisplaySettings call that this results in.
 LONG ChangeDisplayMode(LPCWSTR displayName, const DISPLAY_MODE* mode, DWORD dwFlags) {
-    DEVMODE devMode = {
+    DEVMODEW devMode = {
         .dmSize = sizeof(devMode),
         .dmFields = DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY,
         .dmPelsWidth = mode->width,
@@ -62,7 +62,7 @@ struct TestDisplayModeParams {
 
 static DWORD WINAPI TestDisplayModeThread(LPVOID lpParam) {
     struct TestDisplayModeParams* params = lpParam;
-    DEVMODE originalMode = { .dmSize = sizeof(originalMode) };
+    DEVMODEW originalMode = { .dmSize = sizeof(originalMode) };
     EnumDisplaySettings(params->displayName, ENUM_CURRENT_SETTINGS, &originalMode);
     ChangeDisplayMode(params->displayName, &params->mode, CDS_FULLSCREEN);
 
diff --git a/WinPowerDMS/WinPowerDMS.c b/WinPowerDMS/WinPowerDMS.c
index 35db147..90a1297 100644
--- a/WinPowerDMS/WinPowerDMS.c
+++ b/WinPowerDMS/WinPowerDMS.c
@@ -87,7 +87,7 @@ static BOOL LoadPrefs(void) {
 }
 
 static DISPLAY_MODE GetCurrentDisplayMode(void) {
-    DEVMODE currentMode = { .dmSize = sizeof(currentMode) };
+    DEVMODEW currentMode = { .dmSize = sizeof(currentMode) };
     EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &currentMode);
     return (DISPLAY_MODE) {
         .width = currentMode.dmPelsWidth,
@@ -104,7 +104,7 @@ static INT_PTR CALLBACK PrefsDialogProc(HWND hDlg, UINT uMsg, WPARAM wParam, LPA
     switch (uMsg) {
     case WM_INITDIALOG: {
         // devMode object that will be enumerated
-        DEVMODE devMode;
+        DEVMODEW devMode;
         ZeroMemory(&devMode, sizeof(devMode));
         devMode.dmSize = sizeof(devMode);