diff --git a/Makefile.buildbot b/Makefile.buildbot
index 1e1624e4c..61e40b2b0 100644
--- a/Makefile.buildbot
+++ b/Makefile.buildbot
@@ -1,5 +1,4 @@
 TRIAL := $(shell which trial)
-COVERAGE_DIR ?= "htmlcov"
 
 deb:
 	python extras/makedeb.py build
@@ -7,15 +6,3 @@ deb:
 deb-clean:
 	debclean
 	python extras/makedeb.py clean
-
-# Generate coverage reports
-# Requires: coverage 3.3 or above from http://pypi.python.org/pypi/coverage
-coverage-report:
-	coverage run --branch ${TRIAL} --reporter=text scrapy.tests
-	coverage html -i -d "${COVERAGE_DIR}"
-
-coverage-view: coverage-report
-	python -m webbrowser "${COVERAGE_DIR}"
-
-coverage-clean:
-	rm -rf .coverage "${COVERAGE_DIR}"
diff --git a/extras/coverage-report.sh b/extras/coverage-report.sh
new file mode 100755
index 000000000..90b2e0334
--- /dev/null
+++ b/extras/coverage-report.sh
@@ -0,0 +1,7 @@
+# Run tests, generate coverage report and open it on a browser
+#
+# Requires: coverage 3.3 or above from http://pypi.python.org/pypi/coverage
+
+coverage run --branch $(which trial) --reporter=text scrapy.tests
+coverage html -i
+python -m webbrowser htmlcov/index.html