diff --git a/ISBN_Check/Main/Form1.cs b/ISBN_Check/Main/Form1.cs
index 84dd836..df842d4 100644
--- a/ISBN_Check/Main/Form1.cs
+++ b/ISBN_Check/Main/Form1.cs
@@ -20,6 +20,7 @@ namespace ISBN_Check_test
         public Form1()
         {
             InitializeComponent();
+            this.dataGridView1.EditMode = DataGridViewEditMode.EditOnKeystrokeOrF2;
             this.Text = $"{Application.ProductName} ver {Application.ProductVersion}";
         }
         private void Form1_Load(object sender, EventArgs e)
diff --git a/ISBN_Check/Main/Properties/AssemblyInfo.cs b/ISBN_Check/Main/Properties/AssemblyInfo.cs
index 8c8d630..3960f8b 100644
--- a/ISBN_Check/Main/Properties/AssemblyInfo.cs
+++ b/ISBN_Check/Main/Properties/AssemblyInfo.cs
@@ -31,6 +31,6 @@ using System.Runtime.InteropServices;
 //
 // 모든 값을 지정하거나 아래와 같이 '*'를 사용하여 빌드 번호 및 수정 번호를
 // 기본값으로 할 수 있습니다.
-[assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.1")]
 // [assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.1")]
diff --git a/ISBN_Check/Main/Yes24.cs b/ISBN_Check/Main/Yes24.cs
index de6ef87..6486707 100644
--- a/ISBN_Check/Main/Yes24.cs
+++ b/ISBN_Check/Main/Yes24.cs
@@ -126,7 +126,7 @@ namespace ISBN_Check_test
             string[,] grid = new string[dataGridView1.Rows.Count, 6];
             for (int a = 0; a < dataGridView1.Rows.Count; a++)
             {
-                string price = dataGridView1.Rows[a].Cells["price"].Value.ToString();
+                string price = dataGridView1.Rows[a].Cells["price"].Value?.ToString() ?? string.Empty;
                 int count = a + 1;
                 grid[a, 0] = count.ToString();
                 grid[a, 1] = dataGridView1.Rows[a].Cells["after_book_name"].Value.ToString();