diff --git a/src/regex_impl.cc b/src/regex_impl.cc
index 2161d113..3dc8bd6b 100644
--- a/src/regex_impl.cc
+++ b/src/regex_impl.cc
@@ -340,7 +340,7 @@ private:
             case '|': case ')':
                 return {};
             default:
-                if (contains("^$.*+?[]{}", cp) or (cp >= 0xF0000 and cp <= 0xFFFFF))
+                if (contains(StringView{"^$.*+?[]{}"}, cp) or (cp >= 0xF0000 and cp <= 0xFFFFF))
                     parse_error(format("unexpected '{}'", cp));
                 ++m_pos;
                 return add_node(ParsedRegex::Literal, cp);
diff --git a/test/regression/4460-nul-byte-in-regex/cmd b/test/regression/4460-nul-byte-in-regex/cmd
new file mode 100644
index 00000000..660eddfb
--- /dev/null
+++ b/test/regression/4460-nul-byte-in-regex/cmd
@@ -0,0 +1 @@
+*%s<ret>d
diff --git a/test/regression/4460-nul-byte-in-regex/in b/test/regression/4460-nul-byte-in-regex/in
new file mode 100644
index 00000000..bd474b25
Binary files /dev/null and b/test/regression/4460-nul-byte-in-regex/in differ
diff --git a/test/regression/4460-nul-byte-in-regex/out b/test/regression/4460-nul-byte-in-regex/out
new file mode 100644
index 00000000..8b137891
--- /dev/null
+++ b/test/regression/4460-nul-byte-in-regex/out
@@ -0,0 +1 @@
+