1 files changed, 2 insertions, 2 deletions
diff --git a/src/Text/Impl/TextModel/TextImageVersion.cs b/src/Text/Impl/TextModel/TextImageVersion.cs
index ef3e44a..783a32a 100644
--- a/src/Text/Impl/TextModel/TextImageVersion.cs
+++ b/src/Text/Impl/TextModel/TextImageVersion.cs
@@ -98,7 +98,7 @@ namespace Microsoft.VisualStudio.Text.Implementation
         public int TrackTo(VersionedPosition other, PointTrackingMode mode)
         {
             if (other.Version == null)
-                throw new ArgumentException(nameof(other));
+                throw new ArgumentException(nameof(other) + " version cannot be null");
 
             if (other.Version.VersionNumber == this.VersionNumber)
                 return other.Position;
@@ -112,7 +112,7 @@ namespace Microsoft.VisualStudio.Text.Implementation
         public Span TrackTo(VersionedSpan span, SpanTrackingMode mode)
         {
             if (span.Version == null)
-                throw new ArgumentException(nameof(span));
+                throw new ArgumentException(nameof(span) + " version cannot be null");
 
             if (span.Version.VersionNumber == this.VersionNumber)
                 return span.Span;