diff --git a/zn_poly.spec b/zn_poly.spec
index b0a8873..8e61f95 100644
--- a/zn_poly.spec
+++ b/zn_poly.spec
@@ -8,7 +8,6 @@ Group:          Development/Libraries
 License:        (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+
 URL:            http://cims.nyu.edu/~harvey/code/zn_poly/
 Source0:        http://cims.nyu.edu/~harvey/code/zn_poly/releases/zn_poly-%{version}.tar.gz
-BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  python
 BuildRequires:  gmp-devel