diff --git a/src/ox/preloader/sizecatcher.hpp b/src/ox/preloader/sizecatcher.hpp
index 2b57338bc..077d6871c 100644
--- a/src/ox/preloader/sizecatcher.hpp
+++ b/src/ox/preloader/sizecatcher.hpp
@@ -87,8 +87,11 @@ constexpr ox::Error SizeCatcher<PlatSpec>::field(const char*, const T **val, std
 
 template<typename PlatSpec>
 constexpr void SizeCatcher<PlatSpec>::pad(const auto *val) noexcept {
-	const auto padding = m_size - m_size % alignOf<PlatSpec>(*val);
-	m_size += padding;
+	const auto a = alignOf<PlatSpec>(*val);
+	const auto excess = m_size % a;
+	if (excess) {
+		m_size += a - excess;
+	}
 }
 
 template<typename PlatSpec, typename T>