diff --git a/pplacer_src/guppy_to_csv.ml b/pplacer_src/guppy_to_csv.ml
index aaebb4fb..0ff35cbf 100644
--- a/pplacer_src/guppy_to_csv.ml
+++ b/pplacer_src/guppy_to_csv.ml
@@ -35,7 +35,8 @@ object (self)
     |> List.cons
         ["origin"; "name"; "multiplicity"; "edge_num"; "like_weight_ratio";
          "post_prob"; "likelihood"; "marginal_like"; "distal_length";
-         "pendant_length"; "classification"; "map_ratio"; "map_overlap"]
+         "pendant_length"; "classification"; "map_ratio"; "map_overlap";
+         "map_identity"]
     |> self#write_ll_tab
 
 end
diff --git a/pplacer_src/placement.ml b/pplacer_src/placement.ml
index 2e2fb488..ff5ed09a 100644
--- a/pplacer_src/placement.ml
+++ b/pplacer_src/placement.ml
@@ -141,7 +141,8 @@ let to_strl_gen fint ffloat ftaxid default place =
   let map_ratio, map_overlap =
     Option.map_default (Tuple2.map some some) (None, None) place.map_identity
   (* eta expansion !! *)
-  and fopt f xo = Option.map_default f default xo in
+  and fopt f xo = Option.map_default f default xo
+  and fidentity x = ffloat (fst x) in
   [
     fint place.location;
     ffloat place.ml_ratio;
@@ -153,6 +154,7 @@ let to_strl_gen fint ffloat ftaxid default place =
     fopt ftaxid place.classif;
     fopt ffloat map_ratio;
     fopt fint map_overlap;
+    fopt fidentity place.map_identity;
   ]
 
 let to_strl =