diff --git a/ClosedXML_Tests/Utils/PackageHelper.cs b/ClosedXML_Tests/Utils/PackageHelper.cs
index d595d8f..33ba3e4 100644
--- a/ClosedXML_Tests/Utils/PackageHelper.cs
+++ b/ClosedXML_Tests/Utils/PackageHelper.cs
@@ -351,7 +351,8 @@
                 {
                     bool stripColumnWidthsFromSheet = stripColumnWidths &&
                         leftPart.ContentType == @"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml" &&
-                        rightPart.ContentType == @"application / vnd.openxmlformats - officedocument.spreadsheetml.worksheet + xml";
+                        rightPart.ContentType == @"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml";
+
                     if (!StreamHelper.Compare(oneStream, otherStream, stripColumnWidthsFromSheet))
                     {
                         pair.Status = CompareStatus.NonEqual;