diff --git a/resources/static/hjs/jcu.hs b/resources/static/hjs/jcu.hs
index 7de86cc..3e977ff 100644
--- a/resources/static/hjs/jcu.hs
+++ b/resources/static/hjs/jcu.hs
@@ -117,7 +117,10 @@ initInterpreter = do
let prRes = [ concatMap (\(prefix, pr) -> prefix ++ " " ++ show (subst env pr) ++ "
\n") (reverse proof)
++ "substitution: " ++ show env ++ "
\n"
| (proof, env) <- enumerateDepthFirst [] result ]
- setHTML resFld (DL.concat prRes)
+ txt = if null prRes
+ then "Could not find an answer to that query"
+ else DL.concat prRes
+ setHTML resFld txt
checkTermSyntax _ = do inp <- jQuery "#txtAddRule"
input <- valString inp