@@ -129,7 +129,8 @@ relOperators = [
129129 [InfixL antijoinP],
130130 [InfixL (reservedOp "union" >> return Union)],
131131 [InfixL (reservedOp "minus" >> return Difference)],
132− [InfixN (reservedOp "=" >> return Equals)],
132+ [InfixN (reservedOp "=" >> return Equals),
133+ InfixN (reservedOp "/=" >> return NotEquals)],
133134 [Postfix extendP]
134135 ]
135136