diff --git a/HelloStudents/HelloStudents.csproj b/HelloStudents/HelloStudents.csproj
index 60a71ca..8117afe 100644
--- a/HelloStudents/HelloStudents.csproj
+++ b/HelloStudents/HelloStudents.csproj
@@ -32,6 +32,9 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup>
+    <StartupObject>HelloStudents.Program</StartupObject>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -48,6 +51,7 @@
     <Compile Include="Student3099Ham.cs" />
     <Compile Include="Student3108Kim.cs" />
     <Compile Include="Student3103Kim.cs" />
+    <Compile Include="Student3116JO.cs" />
     <Compile Include="Student3199Ham.cs" />
     <Compile Include="StudentBase.cs" />
   </ItemGroup>
diff --git a/HelloStudents/Student3116JO.cs b/HelloStudents/Student3116JO.cs
index d32570e..83c4add 100644
--- a/HelloStudents/Student3116JO.cs
+++ b/HelloStudents/Student3116JO.cs
@@ -1,10 +1,10 @@
 namespace HelloStudents
 {
-    internal class Students3116JO : StudentBase
+    internal class Student3116JO : StudentBase
     {
         public override string Hello()
         {
-            return "안녕? 나는 " + this + "야."
+            return "안녕? 나는 " + this + "야.";
         }
     }
 }
\ No newline at end of file