diff --git a/src/handle-tree.c b/src/handle-tree.c
index 1d49627..0471a3b 100644
--- a/src/handle-tree.c
+++ b/src/handle-tree.c
@@ -63,12 +63,14 @@ int handle_tree_del(handle_tree_t* tree, handle_tree_entry_t* entry) {
 
 handle_tree_entry_t* handle_tree_find(handle_tree_t* tree, uintptr_t key) {
   handle_tree_entry_t* entry;
-  handle_tree_entry_t lookup = {0};
-  lookup.key = key;
+  handle_tree_entry_t lookup;
 
   if (key == 0)
     return_error(NULL, ERROR_INVALID_PARAMETER);
 
+  memset(&lookup, 0, sizeof lookup);
+  lookup.key = key;
+
   entry = RB_FIND(handle_tree, tree, &lookup);
   if (entry == NULL)
     return_error(NULL, ERROR_NOT_FOUND);