diff --git a/jflex.spec b/jflex.spec
index 0e8ba04..47ace01 100644
--- a/jflex.spec
+++ b/jflex.spec
@@ -7,6 +7,7 @@ Release:        10%{?dist}
 License:        BSD
 URL:            http://jflex.de/
 BuildArch:      noarch
+ExclusiveArch:  %{java_arches} noarch
 
 # ./create-tarball.sh %%{version}
 Source0:        %{name}-%{version}-clean.tar.gz