diff --git a/python-pymisp.changes b/python-pymisp.changes
index edf8e95..2aa999b 100644
--- a/python-pymisp.changes
+++ b/python-pymisp.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Mar 17 14:49:18 UTC 2020 - Sebastian Wagner <sebix+novell.com@sebix.at>
+
+- set UTF-8 encoding for test, fixes Leap 15.1 buildc
+
 -------------------------------------------------------------------
 Sun Mar 15 10:11:15 UTC 2020 - Sebastian Wagner <sebix+novell.com@sebix.at>
 
diff --git a/python-pymisp.spec b/python-pymisp.spec
index 361bc0f..afd1a49 100644
--- a/python-pymisp.spec
+++ b/python-pymisp.spec
@@ -97,6 +97,7 @@ popd
 %{python_expand %fdupes %{buildroot}%{$python_sitelib}}
 
 %check
+export LANG=en_US.UTF-8
 %python_exec setup.py test
 
 %files %{python_files}