diff --git a/plugins/commands/serve/client/communicator.rb b/plugins/commands/serve/client/communicator.rb
index dff7d4173..44d44048a 100644
--- a/plugins/commands/serve/client/communicator.rb
+++ b/plugins/commands/serve/client/communicator.rb
@@ -76,12 +76,12 @@ module VagrantPlugins
                 value: Google::Protobuf::Any.pack(machine.to_proto)
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
-                value: Google::Protobuf::Any.pack(SDK::Args::Path.new(path: from)),
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
+                value: Google::Protobuf::Any.pack(SDK::Communicator::Path.new(path: from)),
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
-                value: Google::Protobuf::Any.pack(SDK::Args::Path.new(path: to)),
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
+                value: Google::Protobuf::Any.pack(SDK::Communicator::Path.new(path: to)),
               ),
             ]
           )
@@ -102,12 +102,12 @@ module VagrantPlugins
                 value: Google::Protobuf::Any.pack(machine.to_proto)
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
-                value: Google::Protobuf::Any.pack(SDK::Args::Path.new(path: from)),
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
+                value: Google::Protobuf::Any.pack(SDK::Communicator::Path.new(path: from)),
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
-                value: Google::Protobuf::Any.pack(SDK::Args::Path.new(path: to)),
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
+                value: Google::Protobuf::Any.pack(SDK::Communicator::Path.new(path: to)),
               ),
             ]
           )
diff --git a/plugins/commands/serve/mappers/communicator.rb b/plugins/commands/serve/mappers/communicator.rb
index a80ad0349..01af32351 100644
--- a/plugins/commands/serve/mappers/communicator.rb
+++ b/plugins/commands/serve/mappers/communicator.rb
@@ -17,6 +17,23 @@ module VagrantPlugins
           SDK::Communicator::Command.decode(proto.value.value)
         end
       end
+
+      # Build a communicator path from a FuncSpec value
+      class CommunicatorPathFromSpec < Mapper
+        def initialize
+          inputs = [].tap do |i|
+            i << Input.new(type: SDK::FuncSpec::Value) { |arg|
+              arg.type == "hashicorp.vagrant.sdk.Communicator.Path" &&
+                !arg&.value&.value.nil?
+            }
+          end
+          super(inputs: inputs, output: SDK::Communicator::Path, func: method(:converter))
+        end
+
+        def converter(proto)
+          SDK::Communicator::Path.decode(proto.value.value)
+        end
+      end
     end
   end
 end
diff --git a/plugins/commands/serve/service/communicator_service.rb b/plugins/commands/serve/service/communicator_service.rb
index 55dece408..ff54c36bf 100644
--- a/plugins/commands/serve/service/communicator_service.rb
+++ b/plugins/commands/serve/service/communicator_service.rb
@@ -110,11 +110,11 @@ module VagrantPlugins
                 name: "",
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
                 name: "",
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
                 name: "",
               )
             ],
@@ -161,11 +161,11 @@ module VagrantPlugins
                 name: "",
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
                 name: "",
               ),
               SDK::FuncSpec::Value.new(
-                type: "hashicorp.vagrant.sdk.Args.Path",
+                type: "hashicorp.vagrant.sdk.Communicator.Path",
                 name: "",
               )
             ],