diff --git a/testing/synapse/APKBUILD b/testing/synapse/APKBUILD
index 12d207f6419..d127d0883a6 100644
--- a/testing/synapse/APKBUILD
+++ b/testing/synapse/APKBUILD
@@ -5,7 +5,7 @@ pkgver=1.2.1
 pkgrel=0
 pkgdesc="Matrix reference homeserver"
 url="https://github.com/matrix-org/synapse"
-arch="noarch"
+arch="noarch !s390x" # Tests fail
 license="Apache-2.0"
 depends="
 	python3