diff --git a/firefox.spec b/firefox.spec
index 0cb97e0..1f60892 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -1,3 +1,6 @@
+# Temporary disable second arches due to various build issues
+ExclusiveArch: %{ix86} x86_64
+
 # Use ALSA backend?
 %define alsa_backend      0