diff --git a/mono-core.changes b/mono-core.changes
index 7aa48e4..b3a6acf 100644
--- a/mono-core.changes
+++ b/mono-core.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Mar 24 13:14:18 UTC 2015 - dvaleev@suse.com
+
+- Don't run parralel build. It is too fragile
+
 -------------------------------------------------------------------
 Mon Mar 23 22:04:47 UTC 2015 - dvaleev@suse.com
 
diff --git a/mono-core.spec b/mono-core.spec
index 0ae9a55..0e03a3f 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -140,7 +140,7 @@ export PATH=/opt/novell/llvm-mono/bin:$PATH
   --with-ikvm=yes \
   --with-moonlight=no
 
-make %{?_smp_mflags}
+make
 
 %install
 %make_install