diff --git a/sw/logalizer/Makefile b/sw/logalizer/Makefile
index 697bc6b52a..89885c8502 100644
--- a/sw/logalizer/Makefile
+++ b/sw/logalizer/Makefile
@@ -29,11 +29,11 @@ INCLUDES= -I +xml-light -I +lablgtk2 -I ../lib/ocaml
 
 all: play plotter plot sd2log
 
-play : log_file.ml play_core.ml play.ml
+play : log_file.cmo play_core.cmo play.cmo
 	@echo OL $@
 	$(Q)$(OCAMLC) $(INCLUDES) -custom -o $@ unix.cma str.cma xml-light.cma glibivy-ocaml.cma -I +lablgtk2 -I ../lib/ocaml lablgtk.cma lib-pprz.cma gtkInit.cmo $^
 
-play-nox : play_core.ml play-nox.ml
+play-nox : play_core.cmo play-nox.cmo
 	@echo OL $@
 	$(Q)$(OCAMLC) $(INCLUDES) -custom -o $@ unix.cma str.cma xml-light.cma glibivy-ocaml.cma -I +lablgtk2 -I ../lib/ocaml lablgtk.cma lib-pprz.cma  $^
 
@@ -49,6 +49,10 @@ sd2log : sd2log.cmo
 	@echo OL $@
 	$(Q)$(OCAMLC) $(INCLUDES) -custom -o $@ unix.cma str.cma xml-light.cma glibivy-ocaml.cma lib-pprz.cma $^
 
+
+play play-nox plotter sd2log : ../lib/ocaml/lib-pprz.cma
+plot : ../lib/ocaml/lib-pprz.cmxa
+
 # Target for bytecode executable (if ocamlopt is not available)
 # plot : log_file.cmo gtk_export.cmo export.cmo plot.cmo
 #	@echo OL $@