diff --git a/cryptlib.spec b/cryptlib.spec
index 1e85e95..45b8433 100644
--- a/cryptlib.spec
+++ b/cryptlib.spec
@@ -224,7 +224,7 @@ cp -r %{_builddir}/%{name}-%{version}/bindings/javadoc/* %{buildroot}%{_javadocd
 
 # install python3 module
 mkdir -p %{buildroot}%{python3_sitelib}
-cp %{_builddir}/%{name}-%{version}/bindings/build/lib.linux-*%{python3_version}/cryptlib_py.cpython-3*-%{_arch}-linux-gnu.so %{buildroot}%{python3_sitelib}/cryptlib_py.so
+cp %{_builddir}/%{name}-%{version}/bindings/build/lib.linux-*%{python3_version}/cryptlib_py%{python3_ext_suffix} %{buildroot}%{python3_sitelib}/cryptlib_py.so
 
 # install Perl module
 mkdir -p %{buildroot}/usr/local/lib64