diff --git a/include/mcl/ec.hpp b/include/mcl/ec.hpp
index ad1c749..6a6c9b7 100644
--- a/include/mcl/ec.hpp
+++ b/include/mcl/ec.hpp
@@ -693,12 +693,15 @@ public:
 		sub(R, *this, rhs); // QQQ : optimized later
 		return R.isZero();
 	}
+	bool operator!=(const EcT& rhs) const { return !operator==(rhs); }
 	bool operator<(const EcT& rhs) const
 	{
 		if (isZero()) {
 			return !rhs.isZero();
 		}
 		if (rhs.isZero()) return false;
+		normalize();
+		rhs.normalize();
 		int cmp = Fp::compare(x, rhs.x);
 		if (cmp < 0) return true;
 		if (cmp > 0) return false;
@@ -707,7 +710,6 @@ public:
 	bool operator>=(const EcT& rhs) const { return !operator<(rhs); }
 	bool operator>(const EcT& rhs) const { return rhs < *this; }
 	bool operator<=(const EcT& rhs) const { return !operator>(rhs); }
-	bool operator!=(const EcT& rhs) const { return !operator==(rhs); }
 private:
 	static inline void mulArray(EcT& z, const EcT& x, const fp::Unit *y, size_t yn, bool isNegative)
 	{