diff --git a/Makefile.dev b/Makefile.dev
index f262d913043f9d940b4678abe3033509dc98014b..68cfdc33d54f022492993e13abd7fd80307db85a 100644
--- a/Makefile.dev
+++ b/Makefile.dev
@@ -58,8 +58,10 @@ update_version:
 	git add src/lv6version.ml
 	make clean && make
 
+BRANCH=$(shell git rev-parse --abbrev-ref HEAD)
+
 cia:
-	test -f committed && \
+	test -f committed &&  \
    echo "*** I won't commit!\n*** until you 'make update_version'!" \
       || (git commit -a -F log && touch committed) && echo "Hint: 'make ci' to test the CI before doing 'make 'push'"
 
@@ -99,7 +101,7 @@ $(WWWTEST)/pool/$(PACKNAME).tgz: $(PACKNAME).tgz
 
 
 opam : $(WWW)/pool/$(PACKNAME).tgz
-	test -f committed && ( \
+	[ $(BRANCH) = "master" ] && test -f committed && ( \
      cd $(WWW)/opam-repository/packages && \
 	  oasis2opam   $(HTTP)/pool/$(PACKNAME).tgz && \
 	  cp ~/lus2lic/opam $(OPAM_FILE) && \
@@ -109,7 +111,7 @@ opam : $(WWW)/pool/$(PACKNAME).tgz
 	cp -rf $(OPAM_DIR) $(OFFICIAL_OPAM_DIR)
 
 opam-test : $(WWWTEST)/pool/$(PACKNAME).tgz
-	cd $(WWWTEST)/opam-repository/packages && \
+	[ $(BRANCH) = "master" ] && cd $(WWWTEST)/opam-repository/packages && \
 	oasis2opam  $(HTTPTEST)/pool/$(PACKNAME).tgz && \
 	cp ~/lus2lic/opam $(OPAM_FILE_TEST) && \
 	cd .. ; opam-admin check  && opam-admin make -g