diff --git a/Makefile b/Makefile
index 76b8da4..1e24bc7 100644
--- a/Makefile
+++ b/Makefile
@@ -29,8 +29,8 @@ TEST := -v --run ParseFailure
 TEST := -v --run RegExp 
 TEST := -v --run stringToFloat 
 TEST := -v --run TryFinally 
-TEST := -v --run RegExp_exec
 TEST := .
+TEST := -v --run RegExp_exec
 
 test: test-i
 	go test $(TEST)
diff --git a/type_regexp.go b/type_regexp.go
index 0d870b4..3a65400 100644
--- a/type_regexp.go
+++ b/type_regexp.go
@@ -78,7 +78,7 @@ func execRegExp(this *_object, target string) (match bool, result []int) {
 		return // !match
 	}
 	match = true
-	endIndex := int(lastIndex) + result[len(result)-1]
+	endIndex := int(lastIndex) + result[1]
 	if global {
 		this.set("lastIndex", toValue(endIndex), true)
 	}