diff --git a/stl/src/vector_algorithms.cpp b/stl/src/vector_algorithms.cpp
index cb8bbbdbca0..d054b46fdfe 100644
--- a/stl/src/vector_algorithms.cpp
+++ b/stl/src/vector_algorithms.cpp
@@ -3730,7 +3730,8 @@ const void* __stdcall __std_find_trivial_unsized_8(const void* const _First, con
 const void* __stdcall __std_find_trivial_1(
     const void* const _First, const void* const _Last, const uint8_t _Val) noexcept {
 #ifdef _M_ARM64EC
-    return memchr(_First, _Val, _Byte_length(_First, _Last));
+    auto _Result = memchr(_First, _Val, _Byte_length(_First, _Last));
+    return _Result ? _Result : _Last;
 #else
     return _Finding::_Find_impl<_Finding::_Find_traits_1, _Finding::_Predicate::_Equal>(_First, _Last, _Val);
 #endif
@@ -3739,7 +3740,8 @@ const void* __stdcall __std_find_trivial_1(
 const void* __stdcall __std_find_trivial_2(
     const void* const _First, const void* const _Last, const uint16_t _Val) noexcept {
 #ifdef _M_ARM64EC
-    return wmemchr(static_cast<const wchar_t*>(_First), _Val, _Byte_length(_First, _Last) / sizeof(wchar_t));
+    auto _Result = wmemchr(static_cast<const wchar_t*>(_First), _Val, _Byte_length(_First, _Last) / sizeof(wchar_t));
+    return _Result ? _Result : _Last;
 #else
     return _Finding::_Find_impl<_Finding::_Find_traits_2, _Finding::_Predicate::_Equal>(_First, _Last, _Val);
 #endif