diff --git a/ConfForm.Designer.cs b/ConfForm.Designer.cs
index f529f95..77869db 100644
--- a/ConfForm.Designer.cs
+++ b/ConfForm.Designer.cs
@@ -37,7 +37,7 @@ namespace PDF_Merge
             folderBrowserDialog1 = new FolderBrowserDialog();
             sourceLabel = new Label();
             outputLabel = new Label();
-            checkBox1 = new CheckBox();
+            overrideCBox = new CheckBox();
             sourceDirBtn = new Button();
             outPathBtn = new Button();
             SuspendLayout();
@@ -59,7 +59,7 @@ namespace PDF_Merge
             cancelBtn.TabIndex = 1;
             cancelBtn.Text = "Cancel";
             cancelBtn.UseVisualStyleBackColor = true;
-            cancelBtn.Click += this.cancelBtn_Click;
+            cancelBtn.Click += cancelBtn_Click;
             // 
             // sourceBox
             // 
@@ -93,17 +93,17 @@ namespace PDF_Merge
             outputLabel.TabIndex = 5;
             outputLabel.Text = "Output Path";
             // 
-            // checkBox1
+            // overrideCBox
             // 
-            checkBox1.AutoSize = true;
-            checkBox1.Checked = true;
-            checkBox1.CheckState = CheckState.Checked;
-            checkBox1.Location = new Point(171, 105);
-            checkBox1.Name = "checkBox1";
-            checkBox1.Size = new Size(179, 29);
-            checkBox1.TabIndex = 6;
-            checkBox1.Text = "Overwrite Existing";
-            checkBox1.UseVisualStyleBackColor = true;
+            overrideCBox.AutoSize = true;
+            overrideCBox.Checked = true;
+            overrideCBox.CheckState = CheckState.Checked;
+            overrideCBox.Location = new Point(171, 105);
+            overrideCBox.Name = "overrideCBox";
+            overrideCBox.Size = new Size(179, 29);
+            overrideCBox.TabIndex = 6;
+            overrideCBox.Text = "Overwrite Existing";
+            overrideCBox.UseVisualStyleBackColor = true;
             // 
             // sourceDirBtn
             // 
@@ -130,7 +130,7 @@ namespace PDF_Merge
             ClientSize = new Size(500, 282);
             Controls.Add(outPathBtn);
             Controls.Add(sourceDirBtn);
-            Controls.Add(checkBox1);
+            Controls.Add(overrideCBox);
             Controls.Add(outputLabel);
             Controls.Add(sourceLabel);
             Controls.Add(outputBox);
@@ -152,7 +152,7 @@ namespace PDF_Merge
         private FolderBrowserDialog folderBrowserDialog1;
         private Label sourceLabel;
         private Label outputLabel;
-        private CheckBox checkBox1;
+        private CheckBox overrideCBox;
         private Button sourceDirBtn;
         private Button outPathBtn;
     }
diff --git a/ConfForm.cs b/ConfForm.cs
index cd18ea3..c558cef 100644
--- a/ConfForm.cs
+++ b/ConfForm.cs
@@ -18,10 +18,18 @@ namespace PDF_Merge
             InitializeComponent();
 
             string sourcePath = ConfigurationManager.AppSettings["PDF-Path"];
-            string outputPath = ConfigurationManager.AppSettings["PDF-output"];
+            string outputPath = ConfigurationManager.AppSettings["PDF-Output"];
 
             sourceBox.Text = sourcePath;
             outputBox.Text = outputPath;
+            if (ConfigurationManager.AppSettings["overwrite"] == "true")
+            {
+                overrideCBox.Checked = true;
+            }
+            else
+            {
+                overrideCBox.Checked = false;
+            }
         }
 
         private void cancelBtn_Click(object sender, EventArgs e)
diff --git a/Program.cs b/Program.cs
index 36d6500..dc3f031 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,3 +1,5 @@
+using System.Configuration;
+
 namespace PDF_Merge
 {
     internal static class Program
@@ -13,6 +15,10 @@ namespace PDF_Merge
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
             Application.Run(new MainForm());
+            if (ConfigurationManager.AppSettings["PDF-Path"] == "" || ConfigurationManager.AppSettings["PDF-Path"] == null || ConfigurationManager.AppSettings["PDF-Output"] == "" || ConfigurationManager.AppSettings["PDF-Output"] == null)
+            {
+                Application.Run(new ConfForm());
+            }
         }
     }
 }
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