diff --git a/deps/ox/src/ox/mc/intops.hpp b/deps/ox/src/ox/mc/intops.hpp
index adc4fa9b..52563995 100644
--- a/deps/ox/src/ox/mc/intops.hpp
+++ b/deps/ox/src/ox/mc/intops.hpp
@@ -64,13 +64,14 @@ struct McInt {
 
 template<typename I>
 [[nodiscard]]
-constexpr McInt encodeInteger(I input) noexcept {
+constexpr McInt encodeInteger(I pInput) noexcept {
+	auto const input = ox::ResizedInt_t<I, 64>{pInput};
 	McInt out;
 	const auto inputNegative = is_signed_v<I> && input < 0;
 	// move input to uint64_t to allow consistent bit manipulation, and to avoid
 	// overflow concerns
 	uint64_t val = 0;
-	ox_memcpy(&val, &input, sizeof(I));
+	ox_memcpy(&val, &input, sizeof(input));
 	if (val) {
 		// bits needed to represent number factoring in space possibly
 		// needed for signed bit
@@ -93,7 +94,7 @@ constexpr McInt encodeInteger(I input) noexcept {
 		}
 		if (bytes == 9) {
 			out.data[0] = bytesIndicator;
-			ox_memcpy(&out.data[1], &leVal, sizeof(I));
+			ox_memcpy(&out.data[1], &leVal, 8);
 			if (inputNegative) {
 				out.data[1] |= 0b1000'0000;
 			}
diff --git a/deps/ox/src/ox/mc/test/tests.cpp b/deps/ox/src/ox/mc/test/tests.cpp
index 95b34842..a41dc5c0 100644
--- a/deps/ox/src/ox/mc/test/tests.cpp
+++ b/deps/ox/src/ox/mc/test/tests.cpp
@@ -267,6 +267,9 @@ std::map<ox::StringView, ox::Error(*)()> tests = {
 					return OxError(0);
 				};
 				oxAssert(check(uint32_t(14)), "Decode of 14 failed.");
+				oxAssert(check(int8_t(-1)), "Decode of -1 failed.");
+				oxAssert(check(int16_t(-1)), "Decode of -1 failed.");
+				oxAssert(check(int32_t(-1)), "Decode of -1 failed.");
 				oxAssert(check(int64_t(-1)), "Decode of -1 failed.");
 				oxAssert(check(int64_t(-2)), "Decode of -2 failed.");
 				oxAssert(check(int64_t(-127)), "Decode of -127 failed.");