diff --git a/doc/runtime-api.html b/doc/runtime-api.html
index 61c6350ed..9bc167217 100644
--- a/doc/runtime-api.html
+++ b/doc/runtime-api.html
@@ -209,7 +209,7 @@ There is also the function <tt>parseWithHeuristics</tt> which
 takes two more paramaters which let you to have a better control 
 over the parser's behaviour:
 <pre class="haskell">
-let res = parseWithHeuristics eng (startCat gr) heuristic_factor callbacks
+Prelude PGF2> let res = parseWithHeuristics eng (startCat gr) heuristic_factor callbacks
 </pre>
 </span>
 <span class="java">