--- php-pecl-spidermonkey/spidermonkey-1.0.0/spidermonkey_context.c~	2012-04-19 05:50:36.000000000 +0200
+++ php-pecl-spidermonkey/spidermonkey-1.0.0/spidermonkey_context.c	2015-08-09 14:36:38.847523270 +0200
@@ -153,7 +153,7 @@
 	
 	if (JS_EvaluateScript(intern->ct, intern->obj, script, script_len, script_name, 0, &rval) == JS_TRUE)
 	{
-		if (rval != 0)
+		if (!JSVAL_IS_NULL(rval))
 		{
 			/* The script evaluated fine, convert the return value to PHP */
 			jsval_to_zval(return_value, intern->ct, &rval);
--- php-pecl-spidermonkey/spidermonkey-1.0.0/spidermonkey.c~	2012-04-19 05:50:36.000000000 +0200
+++ php-pecl-spidermonkey/spidermonkey-1.0.0/spidermonkey.c	2015-08-09 14:50:54.204868805 +0200
@@ -321,7 +321,7 @@
 	}
 	else if (JSVAL_IS_BOOLEAN(rval))
 	{
-		if (rval == JSVAL_TRUE)
+		if (JSVAL_IS_TRUE(rval))
 		{
 			RETVAL_TRUE;
 		}