diff --git a/mozilla-nss.changes b/mozilla-nss.changes
index fcaf850..99ec415 100644
--- a/mozilla-nss.changes
+++ b/mozilla-nss.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Jul  9 16:32:33 UTC 2010 - jengelh@medozas.de
+
+- Disable testsuite on SPARC. Some tests fails, probably due to
+  just bad timing/luck.
+
 -------------------------------------------------------------------
 Thu Jun  3 22:45:51 CEST 2010 - wr@rosenauer.org
 
diff --git a/mozilla-nss.spec b/mozilla-nss.spec
index 8734fb5..0b6aae0 100644
--- a/mozilla-nss.spec
+++ b/mozilla-nss.spec
@@ -65,7 +65,9 @@ PreReq:         libsoftokn3 >= %{nss_softokn_fips_version}
 Requires:       mozilla-nss-certs
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 %define nssdbdir %{_sysconfdir}/pki/nssdb
+%ifnarch %sparc
 %define run_testsuite 1
+%endif
 
 %description
 Network Security Services (NSS) is a set of libraries designed to
@@ -197,7 +199,7 @@ export NSS_USE_SYSTEM_SQLITE=1
 MAKE_FLAGS="BUILD_OPT=1 NSS_ENABLE_ECC=1"
 make nss_build_all $MAKE_FLAGS
 # run testsuite
-%if %run_testsuite
+%if 0%{?run_testsuite}
 export BUILD_OPT=1
 export HOST="localhost"
 export DOMSUF=" "