diff --git a/python-calmjs.parse.spec b/python-calmjs.parse.spec
index 49d26da..c0560cd 100644
--- a/python-calmjs.parse.spec
+++ b/python-calmjs.parse.spec
@@ -42,7 +42,7 @@ ECMAScript; a near feature complete fork of slimit.
 %setup -q -n calmjs.parse-%{version}
 
 %build
-LANG=en_US.UTF-8
+export LANG=en_US.UTF-8
 %python_build
 
 %install
@@ -52,7 +52,7 @@ LANG=en_US.UTF-8
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
-LANG=en_US.UTF-8
+export LANG=en_US.UTF-8
 %pytest
 
 %files %{python_files}