diff --git a/core/libs/prx/libc/src/ApplicationHeap.cpp b/core/libs/prx/libc/src/ApplicationHeap.cpp
index 4812d1a34..3affde65e 100644
--- a/core/libs/prx/libc/src/ApplicationHeap.cpp
+++ b/core/libs/prx/libc/src/ApplicationHeap.cpp
@@ -47,6 +47,7 @@ int APS5_VABI defaultPosixAlign(void** pointer, std::size_t alignment, std::size
     if (pointer == nullptr || alignment < sizeof(void*) || (alignment & (alignment - 1)) != 0) return 22;
     try { *pointer = defaultAlign(alignment, bytes); return 0; }
     catch (const std::bad_alloc&) { return 12; }
+    catch (const std::length_error&) { return 12; }
 }
 
 std::array<void*, 10> defaultApi() {
diff --git a/core/libs/tests/ApplicationHeap.cpp b/core/libs/tests/ApplicationHeap.cpp
index bcde41c56..6cd531139 100644
--- a/core/libs/tests/ApplicationHeap.cpp
+++ b/core/libs/tests/ApplicationHeap.cpp
@@ -157,6 +157,9 @@ int main(int argc, char** argv) {
         require(ApplicationHeapPosixAlign_nid_no_patch(&aligned, 256, 99) == 0);
         require(reinterpret_cast<std::uintptr_t>(aligned) % 256 == 0);
         ApplicationHeapFree_nid_no_patch(aligned);
+        void* refused = nullptr;
+        require(ApplicationHeapPosixAlign_nid_no_patch(&refused, 256, SIZE_MAX) == 12 && refused == nullptr);
+        require(posix_memalign_nid_postfix(&refused, 4096, SIZE_MAX - 4096) == 12 && refused == nullptr);
         ApplicationHeapFree_nid_no_patch(nullptr);
         reject([] { ApplicationHeapCalloc_nid_no_patch(SIZE_MAX, 2); });
         reject([] { ApplicationHeapAlign_nid_no_patch(3, 16); });