diff --git a/_multibuild b/_multibuild
index f4bc44c..1e5398d 100644
--- a/_multibuild
+++ b/_multibuild
@@ -1,4 +1,4 @@
 <multibuild>
-  <!-- <package>gnu-openmpi-hpc</package> -->
+  <package>gnu-openmpi-hpc</package>
   <package>gnu-mvapich2-hpc</package>
 </multibuild>
diff --git a/mpiP.changes b/mpiP.changes
index 59dc6c2..1f89525 100644
--- a/mpiP.changes
+++ b/mpiP.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Oct 17 13:55:39 UTC 2017 - eich@suse.com
+
+- Add magic to limit the number of flavors built in the
+  in the OBS ring.
+
 -------------------------------------------------------------------
 Fri Oct 13 11:20:18 UTC 2017 - jengelh@inai.de
 
diff --git a/mpiP.spec b/mpiP.spec
index 99a3af4..063969d 100644
--- a/mpiP.spec
+++ b/mpiP.spec
@@ -22,10 +22,20 @@
 %define vers 3.4.1
 %define _vers 3_4_1
 
+%bcond_with ringdisabled
+
 %if "%flavor" == ""
 ExclusiveArch:  do_not_build
 %endif
 
+# Magic for OBS Staging. Only build the flavors required by
+# other packages in the ring.
+%if %{with ringdisabled}
+ %if "%flavor" != "standard"
+ExclusiveArch:  do_not_build
+ %endif
+%endif
+
 %if "%{flavor}" == "gnu-openmpi-hpc"
 %global compiler_family gnu
 %undefine c_f_ver