diff --git a/AUTHORS.rst b/AUTHORS.rst
index 9a8224dc7d..0e46a7772c 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -108,3 +108,4 @@ The following organizations or individuals have contributed to ScanCode:
 - Yash Sharma @yasharmaster
 - Yunus Rahbar @yns88
 - Stefano Zacchiroli @zacchiro
+- Harish Wargad @harishwargad
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cf4db41092..0e0e6a9c7f 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -8,6 +8,11 @@ Next release
   ``licensedcode-data``.
   https://github.com/aboutcode-org/scancode-toolkit/pull/5056
 
+- Ensure each license rule has a unique generated validation 
+  test name, by renaming colliding rule files and adding a 
+  regression test to prevent rule name collisions.
+  https://github.com/aboutcode-org/scancode-toolkit/issues/5257
+  
 - Improve copyright detection for statements with parens or trailing "authors"
 
 
diff --git a/src/licensedcode/data/rules/cnri-python-1.6_1.RULE b/src/licensedcode/data/rules/cnri-python-1.6_19.RULE
similarity index 100%
rename from src/licensedcode/data/rules/cnri-python-1.6_1.RULE
rename to src/licensedcode/data/rules/cnri-python-1.6_19.RULE
diff --git a/src/licensedcode/data/rules/proprietary_10.RULE b/src/licensedcode/data/rules/proprietary_155.RULE
similarity index 100%
rename from src/licensedcode/data/rules/proprietary_10.RULE
rename to src/licensedcode/data/rules/proprietary_155.RULE
diff --git a/tests/licensedcode/test_rule_file_names.py b/tests/licensedcode/test_rule_file_names.py
new file mode 100644
index 0000000000..700430b13b
--- /dev/null
+++ b/tests/licensedcode/test_rule_file_names.py
@@ -0,0 +1,21 @@
+from collections import defaultdict
+from pathlib import Path
+
+from commoncode.text import python_safe_name
+from licensedcode.models import rules_data_dir
+
+
+def test_rule_file_names_generate_unique_test_method_names():
+    method_to_files = defaultdict(list)
+
+    for rule_file in Path(rules_data_dir).glob("*.RULE"):
+        method_name = python_safe_name(rule_file.stem)
+        method_to_files[method_name].append(rule_file.name)
+
+    duplicate_names = [
+        (method_name, files)
+        for method_name, files in method_to_files.items()
+        if len(files) > 1
+    ]
+
+    assert not duplicate_names, f"Duplicate test method names found: {duplicate_names}"
\ No newline at end of file