diff --git a/dev-lang/tk/tk-8.6.17.ebuild b/dev-lang/tk/tk-8.6.17.ebuild
index 7c9295d9a0756..65525ae0c08c9 100644
--- a/dev-lang/tk/tk-8.6.17.ebuild
+++ b/dev-lang/tk/tk-8.6.17.ebuild
@@ -102,7 +102,8 @@ multilib_src_configure() {
 }
 
 multilib_src_test() {
-	CI=1 virtx emake test || die "Tests failed"
+	CI=1 virtx emake test |& tee test.log || die "Tests failed"
+	grep "Files with failing tests:" test.log && die "Test failed"
 }
 
 multilib_src_install() {
diff --git a/dev-lang/tk/tk-9.0.3-r2.ebuild b/dev-lang/tk/tk-9.0.3-r2.ebuild
index 7576b2058aebf..3ab4d19084c05 100644
--- a/dev-lang/tk/tk-9.0.3-r2.ebuild
+++ b/dev-lang/tk/tk-9.0.3-r2.ebuild
@@ -98,7 +98,8 @@ multilib_src_configure() {
 }
 
 multilib_src_test() {
-	CI=1 virtx emake test || die "Tests failed"
+	CI=1 virtx emake test |& tee test.log || die "Tests failed"
+	grep "Files with failing tests:" test.log && die "Test failed"
 }
 
 multilib_src_install() {