diff --git a/bin/mktestsuite b/bin/mktestsuite
index 013b62debac6a15eaa213804706bf766827987b8..7722439dd2f399e6fd8ae6d78a17fd0753c8efd6 100755
--- a/bin/mktestsuite
+++ b/bin/mktestsuite
@@ -86,5 +86,5 @@ test_true($1>=$1) ]])
 EOF
 
 cat $1
-) | m4
+) | (shift ; m4 "$@")