diff --git a/scripts/filebench.build b/scripts/filebench.build
index 144d596..170e836 100755
--- a/scripts/filebench.build
+++ b/scripts/filebench.build
@@ -18,6 +18,7 @@ function em.configure() {
 #		"${DOCDIR}"
 #}
 
+em.supported_os 'Linux'
 em.add_to_family 'System'
 em.set_build_dependencies "${COMPILER}"
 em.make_all
diff --git a/scripts/patchelf.build b/scripts/patchelf.build
index 144d596..170e836 100755
--- a/scripts/patchelf.build
+++ b/scripts/patchelf.build
@@ -18,6 +18,7 @@ function em.configure() {
 #		"${DOCDIR}"
 #}
 
+em.supported_os 'Linux'
 em.add_to_family 'System'
 em.set_build_dependencies "${COMPILER}"
 em.make_all