add binary boolean operators

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Error.hs b/src/Error.hs
index 165cc5c..5ba48bf 100644
--- a/src/Error.hs
+++ b/src/Error.hs
@@ -20,7 +20,7 @@ unwordsList = unwords . map show
 instance Show LispError where
     show (Parse e)        = "Parser Error: " ++ show e
     show (BadForm s expr) = "Bad Form: " ++ s ++ ": " ++ show expr
-    show (ArgCount n es) = "Invalid arity, expected " ++ show n ++ ", got values: " ++ unwordsList es
+    show (ArgCount n es) = "Invalid arity, expected " ++ show n ++ ", got value(s): " ++ unwordsList es
     show (UnknownFunction fn) = "Cannot apply function: " ++ fn
     show (TypeMismatch msg got) = "Type mismatch, expected " ++ msg ++ ", got: " ++ show got