diff --git a/slither/detectors/functions/protected_variable.py b/slither/detectors/functions/protected_variable.py
index 0c1341d3ca..cbd640e18e 100644
--- a/slither/detectors/functions/protected_variable.py
+++ b/slither/detectors/functions/protected_variable.py
@@ -48,7 +48,7 @@ class ProtectedVariables(AbstractDetector):
     def _analyze_function(self, function: Function, contract: Contract) -> List[Output]:
         results = []
 
-        for state_variable_written in function.state_variables_written:
+        for state_variable_written in function.all_state_variables_written():
             if state_variable_written.write_protection:
                 for function_sig in state_variable_written.write_protection:
                     function_protection = contract.get_function_from_signature(function_sig)
diff --git a/tests/detectors/protected-vars/0.8.2/comment.sol b/tests/detectors/protected-vars/0.8.2/comment.sol
index e06ff3902c..a49558b611 100644
--- a/tests/detectors/protected-vars/0.8.2/comment.sol
+++ b/tests/detectors/protected-vars/0.8.2/comment.sol
@@ -33,3 +33,22 @@ contract ReentrancyAndWrite{
     }
 }
 
+contract Internal {
+    /// @custom:security write-protection="onlyOwner()"
+    address owner;
+
+
+
+    modifier onlyOwner(){
+        // lets assume there is an access control
+        _;
+    }
+
+    function buggy() public {
+        internal_write();
+    }
+
+    function internal_write() internal {
+        owner = msg.sender;
+    }
+}
\ No newline at end of file
diff --git a/tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json b/tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json
index cb1ead6217..2c1a11fa40 100644
--- a/tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json
+++ b/tests/detectors/protected-vars/0.8.2/comment.sol.0.8.2.ProtectedVariables.json
@@ -1,5 +1,188 @@
 [
     [
+        {
+            "elements": [
+                {
+                    "type": "function",
+                    "name": "buggy",
+                    "source_mapping": {
+                        "start": 938,
+                        "length": 57,
+                        "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "filename_absolute": "/GENERIC_PATH",
+                        "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "is_dependency": false,
+                        "lines": [
+                            47,
+                            48,
+                            49
+                        ],
+                        "starting_column": 5,
+                        "ending_column": 6
+                    },
+                    "type_specific_fields": {
+                        "parent": {
+                            "type": "contract",
+                            "name": "Internal",
+                            "source_mapping": {
+                                "start": 742,
+                                "length": 331,
+                                "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "filename_absolute": "/GENERIC_PATH",
+                                "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "is_dependency": false,
+                                "lines": [
+                                    36,
+                                    37,
+                                    38,
+                                    39,
+                                    40,
+                                    41,
+                                    42,
+                                    43,
+                                    44,
+                                    45,
+                                    46,
+                                    47,
+                                    48,
+                                    49,
+                                    50,
+                                    51,
+                                    52,
+                                    53,
+                                    54,
+                                    55
+                                ],
+                                "starting_column": 1,
+                                "ending_column": 0
+                            }
+                        },
+                        "signature": "buggy()"
+                    }
+                },
+                {
+                    "type": "function",
+                    "name": "onlyOwner",
+                    "source_mapping": {
+                        "start": 844,
+                        "length": 88,
+                        "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "filename_absolute": "/GENERIC_PATH",
+                        "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "is_dependency": false,
+                        "lines": [
+                            42,
+                            43,
+                            44,
+                            45
+                        ],
+                        "starting_column": 5,
+                        "ending_column": 6
+                    },
+                    "type_specific_fields": {
+                        "parent": {
+                            "type": "contract",
+                            "name": "Internal",
+                            "source_mapping": {
+                                "start": 742,
+                                "length": 331,
+                                "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "filename_absolute": "/GENERIC_PATH",
+                                "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "is_dependency": false,
+                                "lines": [
+                                    36,
+                                    37,
+                                    38,
+                                    39,
+                                    40,
+                                    41,
+                                    42,
+                                    43,
+                                    44,
+                                    45,
+                                    46,
+                                    47,
+                                    48,
+                                    49,
+                                    50,
+                                    51,
+                                    52,
+                                    53,
+                                    54,
+                                    55
+                                ],
+                                "starting_column": 1,
+                                "ending_column": 0
+                            }
+                        },
+                        "signature": "onlyOwner()"
+                    }
+                },
+                {
+                    "type": "variable",
+                    "name": "owner",
+                    "source_mapping": {
+                        "start": 822,
+                        "length": 13,
+                        "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "filename_absolute": "/GENERIC_PATH",
+                        "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                        "is_dependency": false,
+                        "lines": [
+                            38
+                        ],
+                        "starting_column": 5,
+                        "ending_column": 18
+                    },
+                    "type_specific_fields": {
+                        "parent": {
+                            "type": "contract",
+                            "name": "Internal",
+                            "source_mapping": {
+                                "start": 742,
+                                "length": 331,
+                                "filename_relative": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "filename_absolute": "/GENERIC_PATH",
+                                "filename_short": "tests/detectors/protected-vars/0.8.2/comment.sol",
+                                "is_dependency": false,
+                                "lines": [
+                                    36,
+                                    37,
+                                    38,
+                                    39,
+                                    40,
+                                    41,
+                                    42,
+                                    43,
+                                    44,
+                                    45,
+                                    46,
+                                    47,
+                                    48,
+                                    49,
+                                    50,
+                                    51,
+                                    52,
+                                    53,
+                                    54,
+                                    55
+                                ],
+                                "starting_column": 1,
+                                "ending_column": 0
+                            }
+                        }
+                    }
+                }
+            ],
+            "description": "Internal.buggy() (tests/detectors/protected-vars/0.8.2/comment.sol#47-49) should have Internal.onlyOwner() (tests/detectors/protected-vars/0.8.2/comment.sol#42-45) to protect Internal.owner (tests/detectors/protected-vars/0.8.2/comment.sol#38)\n",
+            "markdown": "[Internal.buggy()](tests/detectors/protected-vars/0.8.2/comment.sol#L47-L49) should have [Internal.onlyOwner()](tests/detectors/protected-vars/0.8.2/comment.sol#L42-L45) to protect [Internal.owner](tests/detectors/protected-vars/0.8.2/comment.sol#L38)\n",
+            "first_markdown_element": "tests/detectors/protected-vars/0.8.2/comment.sol#L47-L49",
+            "id": "347d5dbdb03710066bc29d7772156fe5ff3d3371fa4eee4839ee221a1d0de0a4",
+            "check": "protected-vars",
+            "impact": "High",
+            "confidence": "High"
+        },
         {
             "elements": [
                 {