diff --git a/boost.spec b/boost.spec
index 037f40a..9c6fb22 100644
--- a/boost.spec
+++ b/boost.spec
@@ -14,13 +14,13 @@
 %bcond_with openmpi
 %else
 # All arches have mpich
-%bcond_without mpich
+%bcond_with mpich
 
 %ifarch s390
   # No OpenMPI support on these arches
   %bcond_with openmpi
 %else
-  %bcond_without openmpi
+  %bcond_with openmpi
 %endif
 %endif