diff --git a/tests/checks/nuls.fish b/tests/checks/nuls.fish
new file mode 100644
index 000000000..76a0ded71
--- /dev/null
+++ b/tests/checks/nuls.fish
@@ -0,0 +1,7 @@
+#RUN: %fish %s
+# NUL-handling
+
+echo foo\x00bar | string escape
+# CHECK: foo\x00bar
+echo foo\\x00bar | string escape
+# CHECK: foo\\x00bar
diff --git a/tests/checks/string.fish b/tests/checks/string.fish
index 0180d34f2..52dcec924 100644
--- a/tests/checks/string.fish
+++ b/tests/checks/string.fish
@@ -955,8 +955,3 @@ string shorten -m0 foo bar asodjsaoidj
 # CHECK: foo
 # CHECK: bar
 # CHECK: asodjsaoidj
-
-echo foo\x00bar | string escape
-# CHECK: foo\x00bar
-echo foo\\x00bar | string escape
-# CHECK: foo\\x00bar