diff --git a/src/Microsoft.OpenApi/Services/OpenApiUrlTreeNode.cs b/src/Microsoft.OpenApi/Services/OpenApiUrlTreeNode.cs
index 38b571112..425250fc9 100644
--- a/src/Microsoft.OpenApi/Services/OpenApiUrlTreeNode.cs
+++ b/src/Microsoft.OpenApi/Services/OpenApiUrlTreeNode.cs
@@ -150,7 +150,7 @@ public OpenApiUrlTreeNode Attach(string path,
             }
 
             var segments = path.Split('/');
-            if (path.EndsWith("/"))
+            if (path.EndsWith("/", StringComparison.OrdinalIgnoreCase))
             {
                 // Remove the last element, which is empty, and append the trailing slash to the new last element
                 // This is to support URLs with trailing slashes