diff --git a/src/fish_tests.cpp b/src/fish_tests.cpp
index 08c6eaa3c..2e854832e 100644
--- a/src/fish_tests.cpp
+++ b/src/fish_tests.cpp
@@ -6906,6 +6906,7 @@ static void test_re_basic() {
     do_test(!re->match(L""));
     do_test(!re->match(L"ab"));
     do_test((re->match(L"abcd") == match_range_t{0, 4}));
+    do_test(!re->match(L"xabcd"));
     do_test((re->match(L"abcdefghij") == match_range_t{0, 10}));
 
     re = regex_t::try_compile(make_anchored(L"(a+)|(b+)"));
@@ -6914,6 +6915,7 @@ static void test_re_basic() {
     do_test(!re->match(L"aabb"));
     do_test((re->match(L"aaaa") == match_range_t{0, 4}));
     do_test((re->match(L"bbbb") == match_range_t{0, 4}));
+    do_test(!re->match(L"aaaax"));
 }
 
 static void test_re_reset() {