diff --git a/reactos/dll/win32/newdev/wizard.c b/reactos/dll/win32/newdev/wizard.c
index de920382eef..8b469e339d1 100644
--- a/reactos/dll/win32/newdev/wizard.c
+++ b/reactos/dll/win32/newdev/wizard.c
@@ -421,6 +421,7 @@ WelcomeDlgProc(
 	IN LPARAM lParam)
 {
 	PDEVINSTDATA DevInstData;
+	UNREFERENCED_PARAMETER(wParam);
 
 	/* Retrieve pointer to the global setup data */
 	DevInstData = (PDEVINSTDATA)GetWindowLongPtr(hwndDlg, GWL_USERDATA);
@@ -861,6 +862,8 @@ NoDriverDlgProc(
 	PDEVINSTDATA DevInstData;
 	HWND hwndControl;
 
+	UNREFERENCED_PARAMETER(wParam);
+
 	/* Get pointer to the global setup data */
 	DevInstData = (PDEVINSTDATA)GetWindowLongPtr(hwndDlg, GWL_USERDATA);
 
@@ -968,6 +971,7 @@ InstallFailedDlgProc(
 	IN LPARAM lParam)
 {
 	PDEVINSTDATA DevInstData;
+	UNREFERENCED_PARAMETER(wParam);
 
 	/* Retrieve pointer to the global setup data */
 	DevInstData = (PDEVINSTDATA)GetWindowLongPtr(hwndDlg, GWL_USERDATA);
@@ -1043,6 +1047,7 @@ FinishDlgProc(
 	IN LPARAM lParam)
 {
 	PDEVINSTDATA DevInstData;
+	UNREFERENCED_PARAMETER(wParam);
 
 	/* Retrieve pointer to the global setup data */
 	DevInstData = (PDEVINSTDATA)GetWindowLongPtr(hwndDlg, GWL_USERDATA);
@@ -1151,43 +1156,43 @@ DisplayWizard(
 	psp.dwFlags = PSP_DEFAULT | PSP_HIDEHEADER;
 	psp.hInstance = hDllInstance;
 	psp.lParam = (LPARAM)DevInstData;
-	psp.pfnDlgProc = WelcomeDlgProc;
+	psp.pfnDlgProc = (DLGPROC) WelcomeDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_WELCOMEPAGE);
 	ahpsp[IDD_WELCOMEPAGE] = CreatePropertySheetPage(&psp);
 
 	/* Create the Select Source page */
 	psp.dwFlags = PSP_DEFAULT | PSP_USEHEADERTITLE | PSP_USEHEADERSUBTITLE;
-	psp.pfnDlgProc = CHSourceDlgProc;
+	psp.pfnDlgProc = (DLGPROC) CHSourceDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_CHSOURCE);
 	ahpsp[IDD_CHSOURCE] = CreatePropertySheetPage(&psp);
 
 	/* Create the Search driver page */
 	psp.dwFlags = PSP_DEFAULT | PSP_USEHEADERTITLE | PSP_USEHEADERSUBTITLE;
-	psp.pfnDlgProc = SearchDrvDlgProc;
+	psp.pfnDlgProc = (DLGPROC) SearchDrvDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_SEARCHDRV);
 	ahpsp[IDD_SEARCHDRV] = CreatePropertySheetPage(&psp);
 
 	/* Create the Install driver page */
 	psp.dwFlags = PSP_DEFAULT | PSP_USEHEADERTITLE | PSP_USEHEADERSUBTITLE;
-	psp.pfnDlgProc = InstallDrvDlgProc;
+	psp.pfnDlgProc = (DLGPROC) InstallDrvDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_INSTALLDRV);
 	ahpsp[IDD_INSTALLDRV] = CreatePropertySheetPage(&psp);
 
 	/* Create the No driver page */
 	psp.dwFlags = PSP_DEFAULT | PSP_HIDEHEADER;
-	psp.pfnDlgProc = NoDriverDlgProc;
+	psp.pfnDlgProc = (DLGPROC) NoDriverDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_NODRIVER);
 	ahpsp[IDD_NODRIVER] = CreatePropertySheetPage(&psp);
 
 	/* Create the Install failed page */
 	psp.dwFlags = PSP_DEFAULT | PSP_HIDEHEADER;
-	psp.pfnDlgProc = InstallFailedDlgProc;
+	psp.pfnDlgProc = (DLGPROC) InstallFailedDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_INSTALLFAILED);
 	ahpsp[IDD_INSTALLFAILED] = CreatePropertySheetPage(&psp);
 
 	/* Create the Finish page */
 	psp.dwFlags = PSP_DEFAULT | PSP_HIDEHEADER;
-	psp.pfnDlgProc = FinishDlgProc;
+	psp.pfnDlgProc = (DLGPROC) FinishDlgProc;
 	psp.pszTemplate = MAKEINTRESOURCE(IDD_FINISHPAGE);
 	ahpsp[IDD_FINISHPAGE] = CreatePropertySheetPage(&psp);