diff --git a/modules/swagger-codegen/src/main/resources/nancyfx/api.mustache b/modules/swagger-codegen/src/main/resources/nancyfx/api.mustache
index a2634d9ab81..038977fb6d4 100644
--- a/modules/swagger-codegen/src/main/resources/nancyfx/api.mustache
+++ b/modules/swagger-codegen/src/main/resources/nancyfx/api.mustache
@@ -22,7 +22,7 @@ namespace {{packageName}}.{{packageContext}}.Modules
         /// Sets up HTTP methods mappings.
         /// </summary>
         /// <param name="service">Service handling requests</param>
-        public {{classname}}Module({{classname}}Service service) : base("{{{baseContext}}}")
+        public {{classname}}Module({{interfacePrefix}}{{classname}}Service service) : base("{{{baseContext}}}")
         { {{#operation}}
             {{httpMethod}}["{{{path}}}"] = parameters =>
             {
diff --git a/samples/server/petstore/nancyfx/IO.Swagger.sln b/samples/server/petstore/nancyfx/IO.Swagger.sln
index 234aa6fb01c..680fe56caa0 100644
--- a/samples/server/petstore/nancyfx/IO.Swagger.sln
+++ b/samples/server/petstore/nancyfx/IO.Swagger.sln
@@ -2,7 +2,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 2012
 VisualStudioVersion = 12.0.0.0
 MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IO.Swagger", "src\IO.Swagger\IO.Swagger.csproj", "{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IO.Swagger", "src\IO.Swagger\IO.Swagger.csproj", "{19B8107D-38E2-4D32-B74F-C45470A9FCA3}"
 EndProject
 Global
 GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/samples/server/petstore/nancyfx/src/IO.Swagger/IO.Swagger.csproj b/samples/server/petstore/nancyfx/src/IO.Swagger/IO.Swagger.csproj
index 6c13d64b402..b7bb26dd9df 100644
--- a/samples/server/petstore/nancyfx/src/IO.Swagger/IO.Swagger.csproj
+++ b/samples/server/petstore/nancyfx/src/IO.Swagger/IO.Swagger.csproj
@@ -3,7 +3,7 @@
     <PropertyGroup>
         <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
         <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-        <ProjectGuid>{DFBD27E3-36EF-45CB-9D6D-EF500915B5CF}</ProjectGuid>
+        <ProjectGuid>{19B8107D-38E2-4D32-B74F-C45470A9FCA3}</ProjectGuid>
         <OutputType>Library</OutputType>
         <AppDesignerFolder>Properties</AppDesignerFolder>
         <RootNamespace>IO.Swagger.v2</RootNamespace>