diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bc7a5ba1..c2f29acaa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ IMPROVEMENTS:
   - `vagrant destroy` returns exit status 1 if any of the confirmations
     are declined. [GH-923]
   - Forwarded ports can specify a host IP and guest IP to bind to. [GH-1121]
+  - You can now set the "ip" of a private network that uses DHCP. This will
+    change the subnet and such that the DHCP server uses.
 
 BUG FIXES:
 
diff --git a/plugins/providers/virtualbox/action/network.rb b/plugins/providers/virtualbox/action/network.rb
index 6248c755f..9a6050db9 100644
--- a/plugins/providers/virtualbox/action/network.rb
+++ b/plugins/providers/virtualbox/action/network.rb
@@ -220,7 +220,7 @@ module VagrantPlugins
           options[:type] = options[:type].to_sym
 
           # Default IP is in the 20-bit private network block for DHCP based networks
-          options[:ip] = "172.28.128.1" if options[:type] == :dhcp && options[:ip].nil?
+          options[:ip] = "172.28.128.1" if options[:type] == :dhcp && !options[:ip]
 
           # Calculate our network address for the given IP/netmask
           netaddr  = network_address(options[:ip], options[:netmask])