diff --git a/xml/chapter4/section1/subsection5.xml b/xml/chapter4/section1/subsection5.xml
index 51e387137..ab91a6058 100644
--- a/xml/chapter4/section1/subsection5.xml
+++ b/xml/chapter4/section1/subsection5.xml
@@ -432,7 +432,7 @@ function run_forever() { return run_forever(); }
 <SHORT_SPACE/>	
 function strange(f) {
     return halts(f, f)
-           ? run_forever();
+           ? run_forever()
            : "halted";
 }
       </JAVASCRIPT>