diff --git a/spack.changes b/spack.changes
index 459af04..1cc9195 100644
--- a/spack.changes
+++ b/spack.changes
@@ -1,9 +1,8 @@
 -------------------------------------------------------------------
 Thu Jun  1 11:32:36 UTC 2023 - Egbert Eich <eich@suse.com>
 
-- Do not attempt to build documentation for 32-bit.
-  There are build issues on some build targets which do not
-  trigger for 64-bit.
+- Do not attempt to build documentation for 32-bit, s390x and
+  ppc64*. There are build issues on some build targets.
 
 -------------------------------------------------------------------
 Mon May 22 14:40:17 UTC 2023 - Christian Goll <cgoll@suse.com>
diff --git a/spack.spec b/spack.spec
index 9a52f35..1165122 100644
--- a/spack.spec
+++ b/spack.spec
@@ -19,7 +19,7 @@
 %global flavor @BUILD_FLAVOR@%{?nil}
 %if "%{flavor}" == "doc"
 %bcond_without doc
-%ifarch i586 %arm s390
+%ifarch i586 %arm s390 s390x %power64 ppc
 ExclusiveArch:  do_not_build
 %endif
 %endif