diff --git a/backends/arm/arm_backend.py b/backends/arm/arm_backend.py
index b55f237543b..47c3c2d5e5e 100644
--- a/backends/arm/arm_backend.py
+++ b/backends/arm/arm_backend.py
@@ -52,6 +52,7 @@ def __init__(self):
         # TODO MLETORCH-265 Remove permute_nhwc flag
         self.permute_nhwc = False
         self.quantize_io = False
+        self.tosa_version = None
 
     def ethosu_compile_spec(
         self,