diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 032cc3f..47298ea 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -30,3 +30,4 @@ In the order of appearance in the commit history:
 | -                         | @mtnpke            |
 | Omri Sarig                | @omrisarig13       |
 | Issam E. Maghni           | @concatime         |
+| Patrik Bachan             | @diggit            |
diff --git a/pylink/jlink.py b/pylink/jlink.py
index 472f88c..c98ce07 100644
--- a/pylink/jlink.py
+++ b/pylink/jlink.py
@@ -943,6 +943,7 @@ def sync_firmware(self):
 
         return None
 
+    @open_required
     def exec_command(self, cmd):
         """Executes the given command.