diff --git a/src/testdir/test_command_count.in b/src/testdir/test_command_count.in
index c87b4c9..a86931f 100644
--- a/src/testdir/test_command_count.in
+++ b/src/testdir/test_command_count.in
@@ -2,6 +2,7 @@
 
 STARTTEST
 :so small.vim
+:lang C
 :let g:lines = []
 :com -range=% RangeLines :call add(g:lines, 'RangeLines '.<line1>.' '.<line2>)
 :com -range -addr=arguments RangeArguments :call add(g:lines, 'RangeArguments '.<line1>.' '.<line2>)