diff --git a/will-crash.spec b/will-crash.spec
index 76781a1..64e7056 100644
--- a/will-crash.spec
+++ b/will-crash.spec
@@ -1,3 +1,7 @@
+%if 0%{?rhel} && 0%{?rhel} <= 6
+%{!?ruby_vendorlibdir: %global ruby_vendorlibdir /usr/lib/ruby/site_ruby/1.8}
+%endif
+
 Name:           will-crash
 Version:        0.10
 Release:        1%{?dist}