diff --git a/dev-libs/shuffile/shuffile-0.1.0-r1.ebuild b/dev-libs/shuffile/shuffile-0.1.0-r1.ebuild
index 02b2dff1d3..17a5d36b9d 100644
--- a/dev-libs/shuffile/shuffile-0.1.0-r1.ebuild
+++ b/dev-libs/shuffile/shuffile-0.1.0-r1.ebuild
@@ -25,7 +25,9 @@ BDEPEND="
 "
 
 PATCHES=( "${FILESDIR}/${P}-no-static.patch" )
-RESTRICT="!test? ( test )"
+# tests require access to /dev/shm, thus root permission is needed
+# but mpirun refuse to run as root
+RESTRICT="test"
 
 src_configure() {
 	mycmakeargs=(
diff --git a/dev-libs/shuffile/shuffile-0.2.0.ebuild b/dev-libs/shuffile/shuffile-0.2.0.ebuild
index 213612ce07..ba8e30f2f5 100644
--- a/dev-libs/shuffile/shuffile-0.2.0.ebuild
+++ b/dev-libs/shuffile/shuffile-0.2.0.ebuild
@@ -22,7 +22,9 @@ RDEPEND="
 DEPEND="${RDEPEND}"
 
 PATCHES=( "${FILESDIR}/${PN}-0.1.0-no-static.patch" )
-RESTRICT="!test? ( test )"
+# tests require access to /dev/shm, thus root permission is needed
+# but mpirun refuse to run as root
+RESTRICT="test"
 
 src_configure() {
 	mycmakeargs=(