diff --git a/generate_sen.sh b/generate_sen.sh
index 854c15b3..33d55392 100755
--- a/generate_sen.sh
+++ b/generate_sen.sh
@@ -3,6 +3,6 @@
 echo 'enum {'
 echo 'SEN_printargs = 0,'
     sed -r -n '/printargs/! s/.*SEN\(([^)]+)\).*/\1/p' |
-    sort -u |
+    LC_COLLATE=C sort -u |
     sed 's/.*/SEN_&,/'
 echo '};'