diff --git a/include/fixmath/fixed_impl.inl b/include/fixmath/fixed_impl.inl
index 5c50d74..b965a65 100644
--- a/include/fixmath/fixed_impl.inl
+++ b/include/fixmath/fixed_impl.inl
@@ -294,9 +294,9 @@ constexpr fixed<policy> operator/(fixed<policy> a, fixed<policy> b) {
 	int64_t rem = 0;
 	if constexpr (sizeof(raw_t) == 8) {
 		// use extended int128 division
-		raw_t _check_bits = a.raw() >> (fixed::ALL_BITS - fixed::FRACTION_BITS - 1);
-		raw_t _remain_bits = a.raw() & (fixed::FRACTION_MASK >> 1);
-		if (FIXMATH_LIKELY(_check_bits == 0 || (_check_bits == -1 && _remain_bits))) {
+		const static raw_t _simp_min = fixed::INTEGER_MASK >> 1;
+		const static raw_t _simp_max = fixed::FRACTION_MASK >> 1;
+		if (FIXMATH_LIKELY(_simp_min < a.raw() && a.raw() <= _simp_max)) {
 			// check for simplified division
 			qlo = a.raw() * fixed::RATIO;
 			if constexpr (policy::rounding) {