diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT014.py b/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT014.py
index b408063d9b235..6a401491efeac 100644
--- a/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT014.py
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_pytest_style/PT014.py
@@ -51,3 +51,8 @@ def test_error_parentheses_trailing_comma(x):
 @pytest.mark.parametrize("x", [1, 2])
 def test_ok(x):
     ...
+
+
+@pytest.mark.parametrize('data, spec', [(1.0, 1.0), (1.0, 1.0)])
+def test_numbers(data, spec):
+    ...
diff --git a/crates/ruff_linter/src/rules/flake8_pytest_style/rules/parametrize.rs b/crates/ruff_linter/src/rules/flake8_pytest_style/rules/parametrize.rs
index ded974d879624..ae9760c7e9a8d 100644
--- a/crates/ruff_linter/src/rules/flake8_pytest_style/rules/parametrize.rs
+++ b/crates/ruff_linter/src/rules/flake8_pytest_style/rules/parametrize.rs
@@ -644,10 +644,15 @@ fn check_values(checker: &mut Checker, names: &Expr, values: &Expr) {
 ///              Tokenize this range to locate the comma.
 /// )
 /// ```
-fn trailing_comma(element: &Expr, source: &str) -> Option<TextSize> {
-    SimpleTokenizer::starts_at(element.end(), source)
-        .find(|token| token.kind == SimpleTokenKind::Comma)
-        .map(|token| token.start())
+fn trailing_comma(element: &Expr, source: &str, max_index: TextSize) -> TextSize {
+    for token in SimpleTokenizer::starts_at(element.end(), source) {
+        if matches!(token.kind, SimpleTokenKind::Comma) {
+            return token.start();
+        } else if token.start() >= max_index {
+            return max_index;
+        }
+    }
+    max_index
 }
 
 /// PT014
@@ -672,9 +677,9 @@ fn check_duplicates(checker: &mut Checker, values: &Expr) {
                 if let Some(prev) = prev {
                     let values_end = values.end() - TextSize::new(1);
                     let previous_end =
-                        trailing_comma(prev, checker.locator().contents()).unwrap_or(values_end);
+                        trailing_comma(prev, checker.locator().contents(), values_end);
                     let element_end =
-                        trailing_comma(element, checker.locator().contents()).unwrap_or(values_end);
+                        trailing_comma(element, checker.locator().contents(), values_end);
                     let deletion_range = TextRange::new(previous_end, element_end);
                     if !checker
                         .indexer()
diff --git a/crates/ruff_linter/src/rules/flake8_pytest_style/snapshots/ruff_linter__rules__flake8_pytest_style__tests__PT014.snap b/crates/ruff_linter/src/rules/flake8_pytest_style/snapshots/ruff_linter__rules__flake8_pytest_style__tests__PT014.snap
index 2b532f9df688e..92240183c3672 100644
--- a/crates/ruff_linter/src/rules/flake8_pytest_style/snapshots/ruff_linter__rules__flake8_pytest_style__tests__PT014.snap
+++ b/crates/ruff_linter/src/rules/flake8_pytest_style/snapshots/ruff_linter__rules__flake8_pytest_style__tests__PT014.snap
@@ -166,4 +166,20 @@ PT014.py:44:11: PT014 [*] Duplicate of test case at index 0 in `@pytest_mark.par
 46 45 | )
 47 46 | def test_error_parentheses_trailing_comma(x):
 
+PT014.py:56:53: PT014 [*] Duplicate of test case at index 0 in `@pytest_mark.parametrize`
+   |
+56 | @pytest.mark.parametrize('data, spec', [(1.0, 1.0), (1.0, 1.0)])
+   |                                                     ^^^^^^^^^^ PT014
+57 | def test_numbers(data, spec):
+58 |     ...
+   |
+   = help: Remove duplicate test case
 
+ℹ Unsafe fix
+53 53 |     ...
+54 54 | 
+55 55 | 
+56    |-@pytest.mark.parametrize('data, spec', [(1.0, 1.0), (1.0, 1.0)])
+   56 |+@pytest.mark.parametrize('data, spec', [(1.0, 1.0)])
+57 57 | def test_numbers(data, spec):
+58 58 |     ...