diff --git a/aidge_core/export_utils/node_export.py b/aidge_core/export_utils/node_export.py
index a9190b459536bf0b1d78abd89b7f2a3003ca72d0..7a32864001f926653d062fe7672bf2c53271e805 100644
--- a/aidge_core/export_utils/node_export.py
+++ b/aidge_core/export_utils/node_export.py
@@ -11,24 +11,24 @@ def get_chan(tensor: aidge_core.Tensor) -> int:
     """
     dformat = tensor.dformat()
     dims = tensor.dims()
-    if dformat == aidge_core.dformat.Default:
+    if dformat == aidge_core.dformat.default:
         if len(dims) == 4:  # Suppose NCHW
             return dims[1]
         elif len(dims) == 2:  # Suppose NC
             return dims[1]
         else:
             return None
-    elif dformat == aidge_core.dformat.NCHW:
+    elif dformat == aidge_core.dformat.nchw:
         return dims[1]
-    elif dformat == aidge_core.dformat.NHWC:
+    elif dformat == aidge_core.dformat.nhwc:
         return dims[3]
-    elif dformat == aidge_core.dformat.CHWN:
+    elif dformat == aidge_core.dformat.chwn:
         return dims[0]
-    elif dformat == aidge_core.dformat.NCDHW:
+    elif dformat == aidge_core.dformat.ncdhw:
         return dims[1]
-    elif dformat == aidge_core.dformat.NDHWC:
+    elif dformat == aidge_core.dformat.ndhwc:
         return dims[4]
-    elif dformat == aidge_core.dformat.CDHWN:
+    elif dformat == aidge_core.dformat.cdhwn:
         return dims[0]
     else:
         raise RuntimeError(f"Unknown dataformat: {dformat}")
@@ -37,24 +37,24 @@ def get_chan(tensor: aidge_core.Tensor) -> int:
 def get_height(tensor: aidge_core.Tensor) -> int:
     dformat = tensor.dformat()
     dims = tensor.dims()
-    if dformat == aidge_core.dformat.Default:
+    if dformat == aidge_core.dformat.default:
         if len(dims) == 4:  # Suppose NCHW
             return dims[2]
         elif len(dims) == 2:  # Suppose NC
             return 1
         else:
             return None
-    elif dformat == aidge_core.dformat.NCHW:
+    elif dformat == aidge_core.dformat.nchw:
         return dims[2]
-    elif dformat == aidge_core.dformat.NHWC:
+    elif dformat == aidge_core.dformat.nhwc:
         return dims[1]
-    elif dformat == aidge_core.dformat.CHWN:
+    elif dformat == aidge_core.dformat.chwn:
         return dims[1]
-    elif dformat == aidge_core.dformat.NCDHW:
+    elif dformat == aidge_core.dformat.ncdhw:
         return dims[3]
-    elif dformat == aidge_core.dformat.NDHWC:
+    elif dformat == aidge_core.dformat.ndhwc:
         return dims[2]
-    elif dformat == aidge_core.dformat.CDHWN:
+    elif dformat == aidge_core.dformat.cdhwn:
         return dims[2]
     else:
         raise RuntimeError(f"Unknown dataformat: {dformat}")
@@ -63,24 +63,24 @@ def get_height(tensor: aidge_core.Tensor) -> int:
 def get_width(tensor: aidge_core.Tensor) -> int:
     dformat = tensor.dformat()
     dims = tensor.dims()
-    if dformat == aidge_core.dformat.Default:
+    if dformat == aidge_core.dformat.default:
         if len(dims) == 4:  # Suppose NCHW
             return dims[3]
         elif len(dims) == 2:  # Suppose NC
             return 1
         else:
             return None
-    elif dformat == aidge_core.dformat.NCHW:
+    elif dformat == aidge_core.dformat.nchw:
         return dims[3]
-    elif dformat == aidge_core.dformat.NHWC:
+    elif dformat == aidge_core.dformat.nhwc:
         return dims[2]
-    elif dformat == aidge_core.dformat.CHWN:
+    elif dformat == aidge_core.dformat.chwn:
         return dims[2]
-    elif dformat == aidge_core.dformat.NCDHW:
+    elif dformat == aidge_core.dformat.ncdhw:
         return dims[4]
-    elif dformat == aidge_core.dformat.NDHWC:
+    elif dformat == aidge_core.dformat.ndhwc:
         return dims[3]
-    elif dformat == aidge_core.dformat.CDHWN:
+    elif dformat == aidge_core.dformat.cdhwn:
         return dims[3]
     else:
         raise RuntimeError(f"Unknown dataformat: {dformat}")