diff --git a/frontends/LexRain.x b/frontends/LexRain.x
index 8cae9de..5fe9d09 100644
--- a/frontends/LexRain.x
+++ b/frontends/LexRain.x
@@ -31,7 +31,7 @@ $decimalDigit = [0-9]
 $hexDigit = [0-9 a-f A-F]
 
 @reserved = "[" | "]" | "(" | ")" | "{" | "}"
-          | ":" | "==" | "," | ";"
+          | ":" | "==" | "<>" | "," | ";"
           | "?" | "!" | "=" | "+=" | "-=" | "*=" | "/=" | "%="
           | "+" | "-" | "*" | "/" | "%"
           | ">=" | "<="
diff --git a/frontends/ParseRain.hs b/frontends/ParseRain.hs
index 0e87595..692dea4 100644
--- a/frontends/ParseRain.hs
+++ b/frontends/ParseRain.hs
@@ -102,6 +102,7 @@ dyadicCompOp
     <|> do {m <- reserved "<=" ; return (m,A.LessEq) }
     <|> do {m <- reserved ">=" ; return (m,A.MoreEq) }
     <|> do {m <- reserved "==" ; return (m,A.Eq) }
+    <|> do {m <- reserved "<>" ; return (m,A.NotEq) }
 
 monadicArithOp :: RainParser (Meta,A.MonadicOp)
 monadicArithOp