diff --git a/packages/security/polkit/build b/packages/security/polkit/build
index 4a33abb1d3..25993da855 100755
--- a/packages/security/polkit/build
+++ b/packages/security/polkit/build
@@ -38,6 +38,7 @@ cd $PKG_BUILD
             --disable-introspection \
             --with-authfw=shadow \
             --with-os-type=redhat \
+            --with-expat=$SYSROOT_PREFIX/usr \
 
 make