diff --git a/dev-python/PyQt5/PyQt5-5.10.1-r1.ebuild b/dev-python/PyQt5/PyQt5-5.10.1-r1.ebuild
index aac34c8a33a89..8b331f240fb1a 100644
--- a/dev-python/PyQt5/PyQt5-5.10.1-r1.ebuild
+++ b/dev-python/PyQt5/PyQt5-5.10.1-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -169,7 +169,7 @@ src_compile() {
 
 src_install() {
 	installation() {
-		local tmp_root=${D%/}/tmp
+		local tmp_root=${D%/}/${PN}_tmp_root
 		emake INSTALL_ROOT="${tmp_root}" install
 
 		local bin_dir=${tmp_root}${EPREFIX}/usr/bin
diff --git a/dev-python/PyQt5/PyQt5-5.11.3.ebuild b/dev-python/PyQt5/PyQt5-5.11.3.ebuild
index 5eedcadd3ead5..b072e6d3cd77d 100644
--- a/dev-python/PyQt5/PyQt5-5.11.3.ebuild
+++ b/dev-python/PyQt5/PyQt5-5.11.3.ebuild
@@ -163,7 +163,7 @@ src_compile() {
 
 src_install() {
 	installation() {
-		local tmp_root=${D}/tmp
+		local tmp_root=${D}/${PN}_tmp_root
 		# parallel install fails (same issue as qscintilla-python-2.10.8)
 		emake -j1 INSTALL_ROOT="${tmp_root}" install