diff --git a/src/Client/Pages/DataAnnotator/DataAnnotator.fs b/src/Client/Pages/DataAnnotator/DataAnnotator.fs
index 358874b8..ee291e0c 100644
--- a/src/Client/Pages/DataAnnotator/DataAnnotator.fs
+++ b/src/Client/Pages/DataAnnotator/DataAnnotator.fs
@@ -317,7 +317,7 @@ type DataAnnotator =
                                 prop.onClick(fun e ->
                                     match model.DataAnnotatorModel.DataFile with
                                     | Some dtf ->
-                                        let selectors = [|for x in state do x.ToFragmentSelectorString()|]
+                                        let selectors = [|for x in state do x.ToFragmentSelectorString(model.DataAnnotatorModel.ParsedFile.Value.HeaderRow.IsSome)|]
                                         let name = dtf.DataFileName
                                         let dt = dtf.DataFileType
                                         SpreadsheetInterface.AddDataAnnotation {|fileName=name; fileType=dt; fragmentSelectors=selectors; targetColumn=targetCol|}
diff --git a/src/Client/States/DataAnnotator.fs b/src/Client/States/DataAnnotator.fs
index 50cfaeb2..604b9408 100644
--- a/src/Client/States/DataAnnotator.fs
+++ b/src/Client/States/DataAnnotator.fs
@@ -18,9 +18,10 @@ type DataTarget =
     | Row of int
     | Column of int
 
-    member this.ToFragmentSelectorString() =
+    member this.ToFragmentSelectorString(hasHeader: bool) =
+        let rowOffset = if hasHeader then 2 else 1 // header counts and is 1-based
         match this with
-        | Row ri -> sprintf "row=%i" ri
+        | Row ri -> sprintf "row=%i" (ri + rowOffset)
         | Column ci -> sprintf "col=%i" ci
         | Cell (ci, ri) -> sprintf "cell=%i,%i" ri ci