diff --git a/lib/wpscan/wp_target.rb b/lib/wpscan/wp_target.rb
index 50e0a19e..b477d148 100644
--- a/lib/wpscan/wp_target.rb
+++ b/lib/wpscan/wp_target.rb
@@ -21,6 +21,7 @@ class WpTarget < WebSite
   attr_reader :verbose
 
   def initialize(target_url, options = {})
+    raise Exception.new('target_url can not be nil or empty') if target_url.nil? || target_url == ''
     super(target_url)
 
     @verbose        = options[:verbose]
diff --git a/lib/wpscan/wpscan_options.rb b/lib/wpscan/wpscan_options.rb
index cd2e9f48..76b8fdbd 100644
--- a/lib/wpscan/wpscan_options.rb
+++ b/lib/wpscan/wpscan_options.rb
@@ -53,7 +53,7 @@ class WpscanOptions
   end
 
   def url=(url)
-    raise 'Empty URL given' if !url
+    raise  Exception.new('Empty URL given') if url.nil? || url == ''
 
     @url = URI.parse(add_http_protocol(url)).to_s
   end