diff --git a/moler/helpers.py b/moler/helpers.py
index 5a47c9a93..286c3bff9 100644
--- a/moler/helpers.py
+++ b/moler/helpers.py
@@ -574,3 +574,34 @@ def regexp_without_anchors(regexp):
     if regexp_str == org_regexp_str:
         return regexp
     return re.compile(regexp_str)
+
+
+def remove_state_from_sm(source_sm: dict, state_to_remove: str) -> dict:
+    """
+    Remove a state from a state machine dict.
+    :param source_sm: a dict with state machine description
+    :param state_to_remove: name of state to remove
+    :return: a new state machine dict without state_to_remove
+    """
+    new_sm = copy.deepcopy(source_sm)
+    from_states = []
+    for from_state in source_sm.keys():
+        for to_state in source_sm[from_state].keys():
+            if to_state == state_to_remove:
+                from_states.append(from_state)
+
+    for to_state in source_sm[state_to_remove].keys():
+        if to_state == state_to_remove:
+            continue
+        for new_from in from_states:
+            if new_from != to_state and new_from != state_to_remove:
+                break
+        if new_from not in new_sm:
+            new_sm[new_from] = {}
+        new_sm[new_from][to_state] = copy.deepcopy(source_sm[state_to_remove][to_state])
+
+    del new_sm[state_to_remove]
+    for from_state in from_states:
+        del new_sm[from_state][state_to_remove]
+
+    return new_sm
diff --git a/test/test_helpers.py b/test/test_helpers.py
index 21f646948..a55fadb56 100644
--- a/test/test_helpers.py
+++ b/test/test_helpers.py
@@ -428,3 +428,131 @@ def test_date_parser_utc():
     date_parsed = ConverterHelper.parse_date(date_str)
     date_expected = datetime(year=2024, month=5, day=22, hour=9, minute=11, second=48, tzinfo=tzoffset('UTC', 0))
     assert date_parsed == date_expected
+
+
+def test_remove_state_from_sm_dict():
+    from moler.device.unixremote import UnixRemote
+    from moler.helpers import remove_state_from_sm
+    source_sm = {
+        UnixRemote.unix_local: {
+            UnixRemote.proxy_pc: {
+                "execute_command": "ssh",
+                "command_params": {
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                    "host",
+                    "login",
+                    "password",
+                    "expected_prompt"
+                ]
+            },
+        },
+        UnixRemote.proxy_pc: {  # from
+            UnixRemote.unix_remote: {  # to
+                "execute_command": "ssh",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                    "host",
+                    "login",
+                    "password",
+                    "expected_prompt"
+                ]
+            },
+            UnixRemote.unix_local: { # to
+                "execute_command": "exit",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n"
+                },
+                "required_command_params": [    # with parameters
+                    "expected_prompt"
+                ]
+            },
+        },
+        UnixRemote.unix_remote: {  # from
+            UnixRemote.proxy_pc: {  # to
+                "execute_command": "exit",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                    "expected_prompt"
+                ]
+            },
+            UnixRemote.unix_remote_root: {  # to
+                "execute_command": "su",  # using command
+                "command_params": {  # with parameters
+                    "password": "root_password",
+                    "expected_prompt": r'remote_root_prompt',
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                ]
+            },
+        },
+        UnixRemote.unix_remote_root: {  # from
+            UnixRemote.unix_remote: {  # to
+                "execute_command": "exit",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n",
+                    "expected_prompt": r'remote_user_prompt'
+                },
+                "required_command_params": [
+                ]
+            }
+        }
+    }
+
+    expected_sm = {
+        UnixRemote.unix_local: {
+            UnixRemote.unix_remote: {  # to
+                "execute_command": "ssh",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                    "host",
+                    "login",
+                    "password",
+                    "expected_prompt"
+                ]
+            },
+        },
+        UnixRemote.unix_remote: {  # from
+            UnixRemote.unix_local: {  # to
+                "execute_command": "exit",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                    "expected_prompt"
+                ]
+            },
+            UnixRemote.unix_remote_root: {  # to
+                "execute_command": "su",  # using command
+                "command_params": {  # with parameters
+                    "password": "root_password",
+                    "expected_prompt": r'remote_root_prompt',
+                    "target_newline": "\n"
+                },
+                "required_command_params": [
+                ]
+            },
+        },
+        UnixRemote.unix_remote_root: {  # from
+            UnixRemote.unix_remote: {  # to
+                "execute_command": "exit",  # using command
+                "command_params": {  # with parameters
+                    "target_newline": "\n",
+                    "expected_prompt": r'remote_user_prompt'
+                },
+                "required_command_params": [
+                ]
+            }
+        }
+    }
+
+    current_sm = remove_state_from_sm(source_sm, UnixRemote.proxy_pc)
+    assert expected_sm == current_sm