diff --git a/app-accessibility/espeak-ng/espeak-ng-1.51.ebuild b/app-accessibility/espeak-ng/espeak-ng-1.51.ebuild
index 07dff018be839..d0dd844c65b2b 100644
--- a/app-accessibility/espeak-ng/espeak-ng-1.51.ebuild
+++ b/app-accessibility/espeak-ng/espeak-ng-1.51.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -70,7 +70,8 @@ src_compile() {
 }
 
 src_test() {
-	emake check
+	# bug #947014
+	emake check -j1
 }
 
 src_install() {