diff --git a/src/TraceEvent/TraceLog.cs b/src/TraceEvent/TraceLog.cs
index fb0f65fe1..a4355b3cc 100644
--- a/src/TraceEvent/TraceLog.cs
+++ b/src/TraceEvent/TraceLog.cs
@@ -10769,11 +10769,7 @@ public override string ToString()
         #region Private
         internal TraceModuleFile(string fileName, Address imageBase, ModuleFileIndex moduleFileIndex)
         {
-            if (fileName != null)
-            {
-                this.fileName = fileName.ToLowerInvariant();        // Normalize to lower case.
-            }
-
+            this.fileName = fileName;
             this.imageBase = imageBase;
             this.moduleFileIndex = moduleFileIndex;
             fileVersion = "";