diff --git a/src/Elm/Parser/Expression.elm b/src/Elm/Parser/Expression.elm
index 5f691906..6c496013 100644
--- a/src/Elm/Parser/Expression.elm
+++ b/src/Elm/Parser/Expression.elm
@@ -1412,7 +1412,7 @@ infixOperatorAndThen toResult f =
                 "^" ->
                     toResult precedence8Pow
 
-                other ->
+                _ ->
                     errUnknownInfixOperator
         )
         f