diff --git a/dev-util/stressapptest/stressapptest-1.0.9.ebuild b/dev-util/stressapptest/stressapptest-1.0.9.ebuild
index 27748ce9fde53..054b68fe3b0eb 100644
--- a/dev-util/stressapptest/stressapptest-1.0.9.ebuild
+++ b/dev-util/stressapptest/stressapptest-1.0.9.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"
@@ -18,6 +18,9 @@ RDEPEND="dev-libs/libaio"
 DEPEND="${RDEPEND}"
 
 src_configure() {
+	# Uses uintptr_t, which is C++11, #651842
+	append-cxxflags -std=c++11
+
 	# Matches the configure & sat.cc logic.
 	use debug || append-cppflags -DNDEBUG -DCHECKOPTS
 	econf --disable-default-optimizations