diff --git a/vim.spec b/vim.spec
index ac28ca2..226b14f 100644
--- a/vim.spec
+++ b/vim.spec
@@ -323,7 +323,7 @@ export TERM=linux
 # Reset the terminal scrolling region left behind by the testsuite
 trap "printf '\e[r'" EXIT
 # Look for "TEST FAILURE" in the build log
-make test
+LC_ALL=en_US.UTF-8 make test
 
 %post -n gvim
 %icon_theme_cache_post