diff --git a/binding/python/_util.py b/binding/python/_util.py
index 976fd8712..59ea3aada 100644
--- a/binding/python/_util.py
+++ b/binding/python/_util.py
@@ -77,8 +77,6 @@ def _pv_platform():
 
 _PV_SYSTEM, _PV_MACHINE = _pv_platform()
 
-_RASPBERRY_PI_MACHINES = {'arm11', 'cortex-a7', 'cortex-a53', 'cortex-a72', 'cortex-a53-aarch64', 'cortex-a72-aarch64'}
-
 _RASPBERRY_PI_MACHINES = {
     "arm11",
     "cortex-a7",