diff --git a/artiq/examples/kasli_opticlock/device_db.py b/artiq/examples/kasli_opticlock/device_db.py
index 773962d73..7f8478bbe 100644
--- a/artiq/examples/kasli_opticlock/device_db.py
+++ b/artiq/examples/kasli_opticlock/device_db.py
@@ -31,13 +31,13 @@ device_db = {
         "type": "local",
         "module": "artiq.coredevice.i2c",
         "class": "PCA9548",
-        "arguments": {"address": 0x70}
+        "arguments": {"address": 0xe0}
     },
     "i2c_switch1": {
         "type": "local",
         "module": "artiq.coredevice.i2c",
         "class": "PCA9548",
-        "arguments": {"address": 0x71}
+        "arguments": {"address": 0xe2}
     },
 
     "ttl0": {