diff --git a/dev-python/pyformance/pyformance-0.4.ebuild b/dev-python/pyformance/pyformance-0.4.ebuild
index 67ffb16e602cf..0955be5db1781 100644
--- a/dev-python/pyformance/pyformance-0.4.ebuild
+++ b/dev-python/pyformance/pyformance-0.4.ebuild
@@ -23,7 +23,7 @@ DEPEND="
 RDEPEND="dev-python/six[${PYTHON_USEDEP}]"
 
 python_prepare() {
-	sed -i -e "s/find_packages()/find_packages(exclude=['tests'])/"
+	sed -i -e "s/find_packages()/find_packages(exclude=['tests'])/" setup.py || die
 }
 
 python_test() {