diff --git a/src/alloc.c b/src/alloc.c
index ffc1747d..40769ae2 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -212,7 +212,7 @@ static mi_decl_noinline bool mi_check_is_double_freex(const mi_page_t* page, con
       mi_list_contains(page, page->local_free, block) ||
       mi_list_contains(page, mi_page_thread_free(page), block))
   {
-    _mi_error_message(EAGAIN, "double free detected of block %p with size %zu\n", block, mi_page_block_size(page));
+    _mi_error_message(EFAULT, "double free detected of block %p with size %zu\n", block, mi_page_block_size(page));
     return true;
   }
   return false;