diff --git a/dll/win32/msi/dialog.c b/dll/win32/msi/dialog.c
index 8e4c1511081..1bea93dc081 100644
--- a/dll/win32/msi/dialog.c
+++ b/dll/win32/msi/dialog.c
@@ -3206,7 +3206,11 @@ static void msi_dialog_vcl_add_drives( msi_dialog *dialog, msi_control *control
     WCHAR cost_text[MAX_PATH];
     LPWSTR drives, ptr;
     LVITEMW lvitem;
+#ifdef __REACTOS__
+    DWORD size;
+#else
     DWORD size, flags;
+#endif
     int i = 0;
 
     cost = msi_vcl_get_cost(dialog);
@@ -3223,8 +3227,12 @@ static void msi_dialog_vcl_add_drives( msi_dialog *dialog, msi_control *control
     ptr = drives;
     while (*ptr)
     {
+#ifdef __REACTOS__
+        if (GetDriveTypeW(ptr) != DRIVE_FIXED)
+#else
         if (GetVolumeInformationW(ptr, NULL, 0, NULL, 0, &flags, NULL, 0) &&
             flags & FILE_READ_ONLY_VOLUME)
+#endif
         {
             ptr += lstrlenW(ptr) + 1;
             continue;