diff --git a/python-pyserial.changes b/python-pyserial.changes
index 0d6ff67..24cecce 100644
--- a/python-pyserial.changes
+++ b/python-pyserial.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Jun 21 13:47:02 UTC 2017 - bwiedemann@suse.com
+
+- Do not include unneccessary undeterministic environment.pickle in package to fix build-compare
+
 -------------------------------------------------------------------
 Thu Apr  6 18:13:45 UTC 2017 - toddrme2178@gmail.com
 
diff --git a/python-pyserial.spec b/python-pyserial.spec
index aa40b3c..51cbf27 100644
--- a/python-pyserial.spec
+++ b/python-pyserial.spec
@@ -67,6 +67,7 @@ make -C documentation html && rm documentation/_build/html/.buildinfo # Build HT
 
 mv %{buildroot}%{_bindir}/miniterm.py %{buildroot}%{_bindir}/miniterm
 %python_clone -a %{buildroot}%{_bindir}/miniterm
+rm documentation/_build/doctrees/environment.pickle
 
 %post
 %python_install_alternative miniterm