diff --git a/sw/ground_segment/cockpit/Makefile b/sw/ground_segment/cockpit/Makefile
index 8cd1b16c5f..b1692ca399 100644
--- a/sw/ground_segment/cockpit/Makefile
+++ b/sw/ground_segment/cockpit/Makefile
@@ -44,7 +44,7 @@ opt : $(MAIN).opt
 
 $(MAIN) : $(CMO) ../../lib/ocaml/xlib-pprz.cma ../../lib/ocaml/lib-pprz.cma
 	@echo OL $@
-	$(Q)$(OCAMLC) $(OCAMLCFLAGS) -custom $(INCLUDES) unix.cma str.cma xml-light.cma $(LIBS) threads.cma gtkThread.cmo gtkInit.cmo $(CMO) -o $@
+	$(Q)$(OCAMLC) $(OCAMLCFLAGS) -custom $(INCLUDES) unix.cma str.cma xml-light.cma $(LIBS) threads.cma gtkThread.cmo myGtkInit.cmo $(CMO) -o $@
 
 $(MAIN).opt : $(CMX)
 	@echo OOL $@
diff --git a/sw/lib/ocaml/Makefile b/sw/lib/ocaml/Makefile
index 69631148d3..27ff83b2ee 100644
--- a/sw/lib/ocaml/Makefile
+++ b/sw/lib/ocaml/Makefile
@@ -36,9 +36,9 @@ XSRC = platform.ml wind_sock.ml mapCanvas.ml mapWaypoints.ml mapTrack.ml mapGoog
 XCMO = $(XSRC:.ml=.cmo)
 XCMX = $(XSRC:.ml=.cmx)
 
-$(XCMO) $(XCMX) : INCLUDES=$(XINCLUDES)
+$(XCMO) $(XCMX) myGtkInit.cmo : INCLUDES=$(XINCLUDES)
 
-all : lib-pprz.cma xlib-pprz.cma xml_get.out opt
+all : lib-pprz.cma xlib-pprz.cma myGtkInit.cmo xml_get.out opt
 opt : lib-pprz.cmxa xlib-pprz.cmxa
 
 
diff --git a/sw/simulator/myGtkInit.ml b/sw/lib/ocaml/myGtkInit.ml
similarity index 100%
rename from sw/simulator/myGtkInit.ml
rename to sw/lib/ocaml/myGtkInit.ml
diff --git a/sw/simulator/Makefile b/sw/simulator/Makefile
index de46e99ee3..aab79b72f9 100644
--- a/sw/simulator/Makefile
+++ b/sw/simulator/Makefile
@@ -41,7 +41,7 @@ VARINCLUDE=$(PAPARAZZI_HOME)/var/include
 ACINCLUDE = $(PAPARAZZI_HOME)/var/$(AIRCRAFT)
 LAUNCHSITL = launchsitl
 
-all : gaia sitl.cma $(LAUNCHSITL) myGtkInit.cmo
+all : gaia sitl.cma $(LAUNCHSITL)
 	@chmod a+x $(LAUNCHSITL)
 
 simhitl : fg.o $(SIMHCMO) simhitl.cmo