diff --git a/js/test/run-tests b/js/test/run-tests
index 1101ceb0..86b14dc6 100755
--- a/js/test/run-tests
+++ b/js/test/run-tests
@@ -1,4 +1,4 @@
-#!/usr/bin/spidermonkey-1.8.5 -s
+#!/usr/bin/spidermonkey-1.7 -s
 
 //#!/usr/bin/js