diff --git a/configure.ac b/configure.ac
index a3b0b4b..515e0b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -231,6 +231,8 @@
 AM_CONDITIONAL([THRIFT_GEN_xsd], [test "$ax_thrift_gen_xsd" = "yes"])
 AX_THRIFT_GEN(html, [HTML], yes)
 AM_CONDITIONAL([THRIFT_GEN_html], [test "$ax_thrift_gen_html" = "yes"])
+AX_THRIFT_GEN(js, [JavaScript], yes)
+AM_CONDITIONAL([THRIFT_GEN_js], [test "$ax_thrift_gen_js" = "yes"])
 
 AC_CONFIG_HEADERS(config.h:config.hin)