diff --git a/Makefile b/Makefile
index d63435e..06ab92e 100644
--- a/Makefile
+++ b/Makefile
@@ -5,15 +5,18 @@ PREFIX = /usr
 WGET = wget
 BRANCH = v0.8.1.colab
 BUNDLE_OPTS = --verbose --without='development test cucumber'
+GEMFILE_URL=https://portal.softwarepublico.gov.br/gitlab/mezuro/prezento/raw/
 
 all:
 	bundle install $(BUNDLE_OPTS) --local --deployment
-	grep -rl '/usr/local/bin/ruby' vendor/bundle/ruby/gems/*/ | xargs --no-run-if-empty sed -i -e '1,2 s|.*|#!/usr/bin/env ruby|'
+	grep -rl '/usr/local/bin/ruby' vendor/bundle/ruby/gems/*/ | \
+	xargs --no-run-if-empty sed -i -e '1,2 s|.*|#!/usr/bin/env ruby|'
 
 dist: $(TARBALL)
 
 $(TARBALL):
-	(git archive --prefix=$(NAME)-deps-$(VERSION)/ HEAD | gzip > $@) || ($(RM) $@; false)
+	(git archive --prefix=$(NAME)-deps-$(VERSION)/ HEAD | \
+	gzip > $@) || ($(RM) $@; false)
 
 install: all
 	mkdir -p                        $(DESTDIR)$(PREFIX)/lib/$(NAME)/vendor
@@ -24,8 +27,8 @@ install: all
 
 update: clean
 	$(RM) Gemfile*
-	$(WGET) -O Gemfile 	https://portal.softwarepublico.gov.br/gitlab/mezuro/prezento/raw/$(BRANCH)/Gemfile --no-check-certificate
-	$(WGET) -O Gemfile.lock https://portal.softwarepublico.gov.br/gitlab/mezuro/prezento/raw/$(BRANCH)/Gemfile.lock --no-check-certificate
+	$(WGET) -O Gemfile 	$(GEMFILE_URL)/$(BRANCH)/Gemfile --no-check-certificate
+	$(WGET) -O Gemfile.lock $(GEMFILE_URL)/$(BRANCH)/Gemfile.lock --no-check-certificate
 	$(MAKE) bundle
 
 bundle:
--
libgit2 0.21.2