diff --git a/src/ox/ptrarith/nodebuffer.hpp b/src/ox/ptrarith/nodebuffer.hpp
index 4f7dc3c1b..ff80fc355 100644
--- a/src/ox/ptrarith/nodebuffer.hpp
+++ b/src/ox/ptrarith/nodebuffer.hpp
@@ -150,7 +150,7 @@ class __attribute__((packed)) NodeBuffer {
 		size_t spaceNeeded(size_t size);
 
 		template<typename F>
-		ox::Error compact(F cb = [](uint64_t, ItemPtr) {});
+		[[nodiscard]] ox::Error compact(F cb = [](uint64_t, ItemPtr) {});
 
 		void truncate();