diff --git a/deps/ox/src/ox/std/strconv.hpp b/deps/ox/src/ox/std/strconv.hpp
index df4067db..6bd27d69 100644
--- a/deps/ox/src/ox/std/strconv.hpp
+++ b/deps/ox/src/ox/std/strconv.hpp
@@ -33,9 +33,9 @@ constexpr ox::Error writeItoa(Integer v, ox::Writer_c auto &writer) noexcept {
 			mod /= base;
 			if (it || digit) {
 				ox::ResizedInt_t<Integer, 64> start = '0';
-				if (digit >= 10) {
-					start = 'a';
+				if (digit >= 10) [[unlikely]] {
 					digit -= 10;
+					OX_RETURN_ERROR(writer.put('1'));
 				}
 				OX_RETURN_ERROR(writer.put(static_cast<char>(start + digit)));
 				++it;
diff --git a/deps/ox/src/ox/std/test/tests.cpp b/deps/ox/src/ox/std/test/tests.cpp
index 941a8a08..7a3e33df 100644
--- a/deps/ox/src/ox/std/test/tests.cpp
+++ b/deps/ox/src/ox/std/test/tests.cpp
@@ -539,6 +539,19 @@ OX_CLANG_NOWARN_END
 	{
 		"intToStr",
 		[] {
+			oxExpect(ox::intToStr(static_cast<int8_t>(127)), "127");
+			oxExpect(ox::intToStr(static_cast<int8_t>(-128)), "-128");
+			oxExpect(ox::intToStr(static_cast<uint8_t>(255)), "255");
+			oxExpect(ox::intToStr(static_cast<uint16_t>(65535)), "65535");
+			oxExpect(ox::intToStr(static_cast<int16_t>(32767)), "32767");
+			oxExpect(ox::intToStr(static_cast<int16_t>(-32768)), "-32768");
+			oxExpect(ox::intToStr(static_cast<uint32_t>(4294967295)), "4294967295");
+			oxExpect(ox::intToStr(static_cast<int32_t>(2147483647)), "2147483647");
+			oxExpect(ox::intToStr(static_cast<int32_t>(-2147483648)), "-2147483648");
+			oxExpect(ox::intToStr(static_cast<uint64_t>(18446744073709551615u)), "18446744073709551615");
+			oxExpect(ox::intToStr(static_cast<int64_t>(9223372036854775807)), "9223372036854775807");
+			oxExpect(ox::intToStr(static_cast<int64_t>(-9223372036854775807)), "-9223372036854775807");
+			oxExpect(ox::intToStr(0), "0");
 			oxExpect(ox::intToStr(5), "5");
 			oxExpect(ox::intToStr(5000), "5000");
 			oxExpect(ox::intToStr(50000), "50000");