diff --git a/python-pycryptodomex.changes b/python-pycryptodomex.changes
index 7734a61..8a77818 100644
--- a/python-pycryptodomex.changes
+++ b/python-pycryptodomex.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Sep 11 12:23:49 UTC 2019 - Thomas Bechtold <tbechtold@suse.com>
+
+- Add export LC_ALL=en_US.UTF-8 to %build, %install and %check to
+  fix the build on older distros
+
 -------------------------------------------------------------------
 Tue Sep 10 12:15:52 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/python-pycryptodomex.spec b/python-pycryptodomex.spec
index ee76d06..b967ddc 100644
--- a/python-pycryptodomex.spec
+++ b/python-pycryptodomex.spec
@@ -77,14 +77,17 @@ Python. Only the pieces that are extremely critical to performance
 touch .separate_namespace
 
 %build
+export LC_ALL=en_US.UTF-8
 export CFLAGS="%{optflags}"
 %python_build
 
 %install
+export LC_ALL=en_US.UTF-8
 %python_install
 %python_expand %fdupes %{buildroot}%{$python_sitearch}
 
 %check
+export LC_ALL=en_US.UTF-8
 %python_exec setup.py test
 
 %files %{python_files}