diff --git a/ErgometerLibrary/ComPort.cs b/ErgometerLibrary/ComPort.cs
index 555b62c..126fc39 100644
--- a/ErgometerLibrary/ComPort.cs
+++ b/ErgometerLibrary/ComPort.cs
@@ -25,8 +25,13 @@ namespace ErgometerLibrary
             comPort.StopBits = StopBits.One;
             comPort.BaudRate = 9600;
             comPort.ReadTimeout = 1500;
-
-            comPort.Open();
+            try {
+                comPort.Open();
+            }
+            catch(Exception e)
+            {
+                return false;
+            }
 
             return comPort.IsOpen;
         }