diff --git a/lib/Windows/VolumeInfoCache.cs b/lib/Windows/VolumeInfoCache.cs
index 06aff76..c4125c8 100644
--- a/lib/Windows/VolumeInfoCache.cs
+++ b/lib/Windows/VolumeInfoCache.cs
@@ -151,12 +151,12 @@ public VolumeInfo GetVolumeForPath(string path)
             out ulong _);
         if (!result)
         {
+            int lastErr = Marshal.GetLastWin32Error();
             if (lastErr == NativeMethods.ERROR_DEV_NOT_EXIST)
             {
                 return null;
             }
             
-            int lastErr = Marshal.GetLastWin32Error();
             NativeMethods.ThrowSpecificIoException(lastErr,
                 $"Failed retrieving drive volume cluster layout information for {volumePaths.PrimaryDriveRootPath} with winerror {lastErr}");
         }