diff --git a/python-python-ptrace.changes b/python-python-ptrace.changes
index a138051..e5d704f 100644
--- a/python-python-ptrace.changes
+++ b/python-python-ptrace.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Jun 26 16:26:48 UTC 2017 - mimi.vx@gmail.com
+
+- use simplier macros for build c parts and runtests
+
 -------------------------------------------------------------------
 Sun Jun 25 09:00:13 UTC 2017 - mimi.vx@gmail.com
 
diff --git a/python-python-ptrace.spec b/python-python-ptrace.spec
index 99d7e46..c5f60bf 100644
--- a/python-python-ptrace.spec
+++ b/python-python-ptrace.spec
@@ -47,17 +47,17 @@ chmod 0644 examples/*.py
 
 %build
 %python_build
-%{python_expand $python setup_cptrace.py build}
+%python_exec setup_cptrace.py build
 
 %install
 %python_install
-%{python_expand $python setup_cptrace.py install -O1 --skip-build --root %{buildroot}}
+%python_exec setup_cptrace.py install -O1 --skip-build --root %{buildroot}
 %python_clone -a %{buildroot}%{_bindir}/gdb.py
 %python_clone -a %{buildroot}%{_bindir}/strace.py
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
-%{python_expand $python runtests.py}
+%python_exec runtests.py
 
 %post
 %python_install_alternative strace.py