diff --git a/libev.spec b/libev.spec
index a92eeb2..f1e4f15 100644
--- a/libev.spec
+++ b/libev.spec
@@ -35,6 +35,9 @@ featureful. And also smaller. Development libraries.
 %package	source
 Summary:	High-performance event loop/event model with lots of features
 Group:		System Environment/Libraries
+%if 0%{?fedora} >= 12 || 0%{?rhel} > 5
+BuildArch:     noarch
+%endif
 
 %description	source
 This package contains the source code for libev.