diff --git a/doc/reference/ndarray.rst b/doc/reference/ndarray.rst
index 7981e47cc791..d0589165713b 100644
--- a/doc/reference/ndarray.rst
+++ b/doc/reference/ndarray.rst
@@ -134,7 +134,6 @@ Array conversion
 
    dpnp.ndarray.item
    dpnp.ndarray.tolist
-   dpnp.ndarray.tostring
    dpnp.ndarray.tobytes
    dpnp.ndarray.tofile
    dpnp.ndarray.dump
diff --git a/dpnp/dpnp_array.py b/dpnp/dpnp_array.py
index 5e6acae9467a..44f67ea77eab 100644
--- a/dpnp/dpnp_array.py
+++ b/dpnp/dpnp_array.py
@@ -1860,7 +1860,6 @@ def to_device(self, device, /, *, stream=None):
     # 'tobytes',
     # 'tofile',
     # 'tolist',
-    # 'tostring',
 
     def trace(self, offset=0, axis1=0, axis2=1, dtype=None, out=None):
         """