diff --git a/plugins/kernel_v2/config/vm_provisioner.rb b/plugins/kernel_v2/config/vm_provisioner.rb
index af4222f11..912106137 100644
--- a/plugins/kernel_v2/config/vm_provisioner.rb
+++ b/plugins/kernel_v2/config/vm_provisioner.rb
@@ -62,7 +62,7 @@ module VagrantPlugins
 
         current = @config_class.new
         current.set_options(options) if options
-        current.call(@config) if block
+        block.call(current) if block
         current = @config.merge(current) if @config
         @config = current
       end
diff --git a/test/unit/plugins/kernel_v2/config/vm_test.rb b/test/unit/plugins/kernel_v2/config/vm_test.rb
index e7af9921c..b24f3a363 100644
--- a/test/unit/plugins/kernel_v2/config/vm_test.rb
+++ b/test/unit/plugins/kernel_v2/config/vm_test.rb
@@ -8,22 +8,24 @@ describe VagrantPlugins::Kernel_V2::VMConfig do
   describe "#provision" do
     it "stores the provisioners" do
       subject.provision("shell", inline: "foo")
-      subject.provision("shell", inline: "bar")
+      subject.provision("shell", inline: "bar") { |s| s.path = "baz" }
       subject.finalize!
 
       r = subject.provisioners
       expect(r.length).to eql(2)
       expect(r[0].config.inline).to eql("foo")
       expect(r[1].config.inline).to eql("bar")
+      expect(r[1].config.path).to eql("baz")
     end
 
     it "allows provisioner settings to be overriden" do
-      subject.provision("shell", path: "foo", inline: "foo", id: "s")
-      subject.provision("shell", inline: "bar", id: "s")
+      subject.provision("shell", path: "foo", id: "s") { |s| s.inline = "foo" }
+      subject.provision("shell", inline: "bar", id: "s") { |s| s.args = "bar" }
       subject.finalize!
 
       r = subject.provisioners
       expect(r.length).to eql(1)
+      expect(r[0].config.args).to eql("bar")
       expect(r[0].config.inline).to eql("bar")
       expect(r[0].config.path).to eql("foo")
     end