diff --git a/examples/MissionComputer_for_Core/build b/examples/MissionComputer_for_Core/build
index b1889bc..19ae300 100755
--- a/examples/MissionComputer_for_Core/build
+++ b/examples/MissionComputer_for_Core/build
@@ -9,7 +9,7 @@ VERBOSE=1
 
 interfaces=(typeBase.epi typeTracks.epi typeArray.epi cstArrayInit.epi cstBaseInit.epi cstPhysics.epi cstTracksInit.epi mc_TypeInputs.epi mc_TypeLists.epi mc_TypeSensors.epi)
 ext_libs=(mc_ext.epi mathext.epi)
-sources=(math.ept trackslib.ept digital.ept mc.ept dv.ept verif.ept debug.ept)
+sources=(math.ept trackslib.ept digital.ept mc.ept verif.ept dv.ept debug.ept)
 
 exit_if_failed() {
   if [ $? != 0 ]; then
diff --git a/heptc b/heptc
index a741623..2d74cc6 100755
--- a/heptc
+++ b/heptc
@@ -56,6 +56,7 @@ java )
   shift
   compile -target java "$@"
   if [[ $STATUS = 0 ]]
+  then
     #call javac to compile the file given as last argument
     last_arg=$#
     base_f=`basename ${!last_arg} .ept`
diff --git a/test/image_filters/downscale.ept b/test/image_filters/downscale.ept
index 65b2fc6..4e9e832 100644
--- a/test/image_filters/downscale.ept
+++ b/test/image_filters/downscale.ept
@@ -1,4 +1,3 @@
-open Iostream
 
 type pixel = float^3
 
@@ -141,7 +140,6 @@ node main<<size_x, size_y:int>> () returns (img, out : pixel; ck_out :bool;
 let
   (*ck_out = true fby false fby not ck_out;*)
   img = pix_o fby pix_sum(img, pix_o);
-  () = out_bool(ck_y_dhv);
   (out, ck_out, y, y_dh, y_dh_t, y_dhv_t, ck_y_dh, ck_y_dhv) = down_img<<size_x,size_y,3,3>>(img);
 tel