diff --git a/kde-apps/libkleo/libkleo-24.12.49.9999.ebuild b/kde-apps/libkleo/libkleo-24.12.49.9999.ebuild
index c967c96370..497c9b55f4 100644
--- a/kde-apps/libkleo/libkleo-24.12.49.9999.ebuild
+++ b/kde-apps/libkleo/libkleo-24.12.49.9999.ebuild
@@ -34,3 +34,8 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	dev-libs/boost
 "
+
+src_test() {
+	# parallel tests fail, bug 946863
+	ecm_src_test -j1
+}
diff --git a/kde-apps/libkleo/libkleo-9999.ebuild b/kde-apps/libkleo/libkleo-9999.ebuild
index 4bec0e5bb7..af3756e871 100644
--- a/kde-apps/libkleo/libkleo-9999.ebuild
+++ b/kde-apps/libkleo/libkleo-9999.ebuild
@@ -34,3 +34,8 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	dev-libs/boost
 "
+
+src_test() {
+	# parallel tests fail, bug 946863
+	ecm_src_test -j1
+}