diff --git a/aidge_export_arm_cortexm/export.py b/aidge_export_arm_cortexm/export.py
index d1f6595e89eb327ddb67b39a21d708c9078ea3ab..be332bc6043fe853e723382f1df0516934c82bda 100644
--- a/aidge_export_arm_cortexm/export.py
+++ b/aidge_export_arm_cortexm/export.py
@@ -37,7 +37,8 @@ def supported_boards() -> list[str]:
 
 def gen_board_files(path:str, board:str)->None:
     if board not in supported_boards():
-        raise ValueError(f"Board {board} is not supported, supported board are:\n\t-{'\n\t-'.join(supported_boards())}")
+        joint_board_str = "\n\t-".join(supported_boards())
+        raise ValueError(f"Board {board} is not supported, supported board are:\n\t-{joint_board_str}")
 
     if isinstance(path, str): path = Path(path)
     # Create dnn directory is not exist
diff --git a/aidge_export_arm_cortexm/export_registry.py b/aidge_export_arm_cortexm/export_registry.py
index 46c0653ad05895d13ca0d9be7fdb5f4314f2f775..65e867335d2ab061df1257915813bc4509598e69 100644
--- a/aidge_export_arm_cortexm/export_registry.py
+++ b/aidge_export_arm_cortexm/export_registry.py
@@ -3,11 +3,5 @@ from aidge_core.export_utils import ExportLib
 class ExportLibAidgeARM(ExportLib):
     _name="aidge_arm"
 
-
-# TODO ugly fix for Tensor registration issue...
-import aidge_core
-aidge_core.register_Tensor(["aidge_arm", aidge_core.dtype.float32],
-                           aidge_core.get_key_value_Tensor(["cpu", aidge_core.dtype.float32]))
-
 class ExportLibCMSISNN(ExportLib):
     _name="export_cmsisnn"
diff --git a/aidge_export_arm_cortexm/unit_tests/dummy_test.py b/aidge_export_arm_cortexm/unit_tests/test_dummy.py
similarity index 100%
rename from aidge_export_arm_cortexm/unit_tests/dummy_test.py
rename to aidge_export_arm_cortexm/unit_tests/test_dummy.py