diff --git a/dev-python/twisted/twisted-18.4.0.ebuild b/dev-python/twisted/twisted-18.4.0.ebuild
index cd49b1a302311..91d876f3ed1cc 100644
--- a/dev-python/twisted/twisted-18.4.0.ebuild
+++ b/dev-python/twisted/twisted-18.4.0.ebuild
@@ -144,7 +144,7 @@ python_test() {
 python_install() {
 	distutils-r1_python_install
 
-	cd "${D%/}$(python_get_sitedir)" || die
+	cd "${D}$(python_get_sitedir)" || die
 
 	# own the dropin.cache so we don't leave orphans
 	touch twisted/plugins/dropin.cache || die
@@ -179,7 +179,7 @@ pkg_postinst() {
 }
 
 python_postrm() {
-	rm -f "${ROOT%/}$(python_get_sitedir)/twisted/plugins/dropin.cache" || die
+	rm -f "${ROOT}$(python_get_sitedir)/twisted/plugins/dropin.cache" || die
 }
 
 pkg_postrm(){
diff --git a/dev-python/twisted/twisted-18.7.0.ebuild b/dev-python/twisted/twisted-18.7.0.ebuild
index 0e4b0a4607d4f..b8e44fd29607e 100644
--- a/dev-python/twisted/twisted-18.7.0.ebuild
+++ b/dev-python/twisted/twisted-18.7.0.ebuild
@@ -146,7 +146,7 @@ python_test() {
 python_install() {
 	distutils-r1_python_install
 
-	cd "${D%/}$(python_get_sitedir)" || die
+	cd "${D}$(python_get_sitedir)" || die
 
 	# own the dropin.cache so we don't leave orphans
 	touch twisted/plugins/dropin.cache || die
@@ -181,7 +181,7 @@ pkg_postinst() {
 }
 
 python_postrm() {
-	rm -f "${ROOT%/}$(python_get_sitedir)/twisted/plugins/dropin.cache" || die
+	rm -f "${ROOT}$(python_get_sitedir)/twisted/plugins/dropin.cache" || die
 }
 
 pkg_postrm(){