diff --git a/setups/frappy_addons.py b/setups/frappy_addons.py
index 14a94c1..862199d 100644
--- a/setups/frappy_addons.py
+++ b/setups/frappy_addons.py
@@ -6,6 +6,6 @@ devices = {
     'se_addons':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
                description='SEC node', unit='', async_only=True,
-               prefix='se_', auto_create=True, service='addons',
+               prefix=environ.get('SE_PREFIX', 'se_'), auto_create=True, service='addons',
         ),
 }
diff --git a/setups/frappy_main.py b/setups/frappy_main.py
index c182315..008af7b 100644
--- a/setups/frappy_main.py
+++ b/setups/frappy_main.py
@@ -6,6 +6,6 @@ devices = {
     'se_main':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
                description='main SEC node', unit='', async_only=True,
-               prefix='se_', auto_create=True, service='main',
+               prefix=environ.get('SE_PREFIX', '_se'), auto_create=True, service='main',
         ),
 }
diff --git a/setups/frappy_stick.py b/setups/frappy_stick.py
index 28f45f2..14dfb8d 100644
--- a/setups/frappy_stick.py
+++ b/setups/frappy_stick.py
@@ -6,6 +6,6 @@ devices = {
     'se_stick':
         device('nicos_sinq.frappy_sinq.devices.FrappyNode',
                description='stick SEC node', unit='', async_only=True,
-               prefix='se_', auto_create=True, service='stick',
+               prefix=environ.get('SE_PREFIX', 'se_'), auto_create=True, service='stick',
         ),
 }