diff --git a/assertj-core.spec b/assertj-core.spec
index f09cd5c..988c827 100644
--- a/assertj-core.spec
+++ b/assertj-core.spec
@@ -1,4 +1,4 @@
-%bcond_without  memoryfilesystem
+%bcond_with memoryfilesystem
 Name:                assertj-core
 Version:             3.8.0
 Release:             1