diff --git a/Form1.cs b/Form1.cs
index 69d22b9..90720f1 100644
--- a/Form1.cs
+++ b/Form1.cs
@@ -22,14 +22,13 @@ private void btnAnalyse_Click(object sender, EventArgs e)
                 {
                     Results results = new(this);
                     results.Show();
-                    Hide();
                 }
                 else
                 {
                     ExistingResults.Show();
-                    Hide();
                     ExistingResults.btnRefresh_Click(null, null);
                 }
+                Hide();
             }
             else
             {
diff --git a/Results.cs b/Results.cs
index 98eab3b..eb7ba15 100644
--- a/Results.cs
+++ b/Results.cs
@@ -268,7 +268,10 @@ private void tbFilter_TextChanged(object sender, EventArgs e)
 
         private void btn_Back_Click(object sender, EventArgs e)
         {
-            waveOut.Stop();
+            if(waveOut != null)
+            {
+                waveOut.Stop();
+            }
             MyParentForm.ExistingResults = this;
             MyParentForm.Show();
             this.Hide();