diff --git a/python-nixio.spec b/python-nixio.spec
index 90d3442..a012fdf 100644
--- a/python-nixio.spec
+++ b/python-nixio.spec
@@ -1,10 +1,9 @@
 %global srcname     nixio
-%global sum     Python bindings for NIX
 
 Name:       python-%{srcname}
 Version:    1.4.6
 Release:    2%{?dist}
-Summary:    %{sum}
+Summary:    Python bindings for NIX
 
 License:    BSD
 URL:        https://github.com/G-node/nixpy
@@ -27,7 +26,7 @@ The current implementations store the actual data using the HDF5 file format as
 a storage backend.
 
 %package -n python3-%{srcname}
-Summary:        %{sum}
+Summary:        %{summary}
 BuildRequires:  python3-devel
 BuildRequires:  %{py3_dist pytest numpy h5py pytest-runner}
 Requires:       %{py3_dist numpy h5py}
@@ -45,7 +44,7 @@ The current implementations store the actual data using the HDF5 file format as
 a storage backend.
 
 %package doc
-Summary:        %{sum}
+Summary:        %{summary}
 BuildRequires:  python3-sphinx
 
 %description doc