diff --git a/src/Sarif.Converters/HdfConverter.cs b/src/Sarif.Converters/HdfConverter.cs
index b775f38fc..03a50bc11 100644
--- a/src/Sarif.Converters/HdfConverter.cs
+++ b/src/Sarif.Converters/HdfConverter.cs
@@ -173,7 +173,7 @@ private static (ReportingDescriptor, IList<Result>) SarifRuleAndResultFromHdfCon
                             {
                                 ArtifactLocation = new ArtifactLocation
                                 {
-                                   Uri =  new Uri(execJsonControl.SourceLocation.Ref ?? "", UriKind.Relative),
+                                   Uri =  new Uri(execJsonControl.SourceLocation.Ref ?? execJsonControl.Id, UriKind.Relative),
                                    UriBaseId = "ROOTPATH",
                                 },
                                 Region = new Region