diff --git a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
index 072c9d3ee..b30d770de 100644
--- a/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
+++ b/src/Microsoft.OpenApi.Hidi/Microsoft.OpenApi.Hidi.csproj
@@ -15,7 +15,7 @@
     <PackageId>Microsoft.OpenApi.Hidi</PackageId>
     <ToolCommandName>hidi</ToolCommandName>
     <PackageOutputPath>./../../artifacts</PackageOutputPath>
-    <Version>1.2.1</Version>
+    <Version>1.2.2</Version>
     <Description>OpenAPI.NET CLI tool for slicing OpenAPI documents</Description>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <PackageTags>OpenAPI .NET</PackageTags>
diff --git a/src/Microsoft.OpenApi.Hidi/OpenApiService.cs b/src/Microsoft.OpenApi.Hidi/OpenApiService.cs
index c9214030b..fa0b5ff51 100644
--- a/src/Microsoft.OpenApi.Hidi/OpenApiService.cs
+++ b/src/Microsoft.OpenApi.Hidi/OpenApiService.cs
@@ -285,9 +285,10 @@ private static async Task<ReadResult> ParseOpenApi(string openApiFile, bool inli
 
                 result = await new OpenApiStreamReader(new OpenApiReaderSettings
                 {
-                    RuleSet = ValidationRuleSet.GetDefaultRuleSet(),
                     LoadExternalRefs = inlineExternal,
-                    BaseUrl = openApiFile.StartsWith("http") ? new Uri(openApiFile) : new Uri("file:" + new FileInfo(openApiFile).DirectoryName + Path.DirectorySeparatorChar)
+                    BaseUrl = openApiFile.StartsWith("http", StringComparison.OrdinalIgnoreCase) ? 
+                        new Uri(openApiFile) :
+                        new Uri("file://" + new FileInfo(openApiFile).DirectoryName + Path.DirectorySeparatorChar)
                 }
                 ).ReadAsync(stream);