diff --git a/src/BizHawk.Common/OSTailoredCode.cs b/src/BizHawk.Common/OSTailoredCode.cs
index 2a54eebd2b..0d653effb5 100644
--- a/src/BizHawk.Common/OSTailoredCode.cs
+++ b/src/BizHawk.Common/OSTailoredCode.cs
@@ -24,7 +24,7 @@ namespace BizHawk.Common
 			{
 				using var proc = ConstructSubshell("REG", $@"QUERY ""HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion"" /V {key}");
 				proc.Start();
-				return proc.StandardOutput.ReadToEnd().Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries)[1].Split(new[] { '\t', ' ' }, StringSplitOptions.RemoveEmptyEntries)[2];
+				return proc.StandardOutput.ReadToEnd().Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries)[1].Split(new[] { "\t", "    " }, StringSplitOptions.RemoveEmptyEntries)[2];
 			}
 			if (CurrentOS != DistinctOS.Windows) return null;
 			var rawWinVer = float.Parse(GetRegValue("CurrentVersion"), NumberFormatInfo.InvariantInfo); // contains '.' even when system-wide decimal separator is ','