diff --git a/src/mscorlib/shared/System/IO/PathHelper.Windows.cs b/src/mscorlib/shared/System/IO/PathHelper.Windows.cs
index 2b17fff091a7..ed49422c1ad3 100644
--- a/src/mscorlib/shared/System/IO/PathHelper.Windows.cs
+++ b/src/mscorlib/shared/System/IO/PathHelper.Windows.cs
@@ -56,7 +56,7 @@ internal static string Normalize(ref ValueStringBuilder path)
             // Get the full path
             GetFullPathName(path.AsSpan(terminate: true), ref builder);
 
-            string result = builder.AsSpan().Contains('~')
+            string result = builder.AsSpan().IndexOf('~') >= 0
                 ? TryExpandShortFileName(ref builder, originalPath: null)
                 : builder.ToString();