diff --git a/sw/logalizer/Makefile b/sw/logalizer/Makefile
index 4f8681890e..513e4a398b 100644
--- a/sw/logalizer/Makefile
+++ b/sw/logalizer/Makefile
@@ -31,5 +31,5 @@ clean:
 play : play.ml
 	$(OCAMLC) -o $@ unix.cma glibivy-ocaml.cma -I +lablgtk2 lablgtk.cma gtkInit.cmo $^ # to check
 	cat ../../pprz_src_test.sh > $@
-	echo 'lablgtk2 unix.cma glibivy-ocaml.cma $$PAPARAZZI_SRC/sw/logalizer/$< $$*' >> $@
+	echo 'exec lablgtk2 unix.cma glibivy-ocaml.cma $$PAPARAZZI_SRC/sw/logalizer/$< $$*' >> $@
 	chmod a+x $@
diff --git a/sw/logalizer/play.ml b/sw/logalizer/play.ml
index 55eabb2efb..b4f8890b81 100644
--- a/sw/logalizer/play.ml
+++ b/sw/logalizer/play.ml
@@ -58,7 +58,7 @@ let index_of_time log t =
 
 let rec run log adj i speed =
   let (t, m) = log.(i) in
-  Ivy.send (Printf.sprintf "%.2f %s" t m);
+  Ivy.send (Printf.sprintf "%s" m);
   adj#set_value (t -. fst log.(0));
   if i + 1 < Array.length log then
     let dt = fst log.(i+1) -. t in