diff --git a/opensm.spec b/opensm.spec
index 990b004..91eecdf 100644
--- a/opensm.spec
+++ b/opensm.spec
@@ -2,7 +2,7 @@
 
 Name:    opensm
 Version: 3.3.20
-Release: 4%{?dist}
+Release: 5%{?dist}
 Summary: OpenIB InfiniBand Subnet Manager and management utilities
 Group:   System Environment/Daemons
 License: GPLv2 or BSD
@@ -26,7 +26,8 @@ Requires: %{name}-libs%{?_isa} = %{version}-%{release}, logrotate, rdma
 Requires(post): systemd
 Requires(preun): systemd
 Requires(postun): systemd
-ExcludeArch: s390 s390x
+# RDMA is not currently built on 32-bit ARM: #1484155
+ExcludeArch: s390 s390x %{arm}
 
 %description
 OpenSM is the OpenIB project's Subnet Manager for Infiniband networks.
@@ -130,6 +131,10 @@ fi
 %{_libdir}/lib*.a
 
 %changelog
+* Sat Aug 26 2017 Honggang Li <honli@redhat.com> - 3.3.20-5
+- Disable support for ARM32.
+- Resolves: bz1484155
+
 * Thu Aug 03 2017 Fedora Release Engineering <releng@fedoraproject.org> - 3.3.20-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild