diff --git a/Lib/test/test_str.py b/Lib/test/test_str.py
index 15cee0d3a44..2c801797cdd 100644
--- a/Lib/test/test_str.py
+++ b/Lib/test/test_str.py
@@ -1463,7 +1463,6 @@ def test_format_huge_precision(self):
         with self.assertRaises(ValueError):
             result = format(2.34, format_string)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: ValueError not raised
     def test_format_huge_width(self):
         format_string = "{}f".format(sys.maxsize + 1)
         with self.assertRaises(ValueError):
diff --git a/crates/common/src/format.rs b/crates/common/src/format.rs
index 9b769a038e7..f5e09bb1e91 100644
--- a/crates/common/src/format.rs
+++ b/crates/common/src/format.rs
@@ -315,6 +315,11 @@ impl FormatSpec {
         let (alternate_form, text) = parse_alternate_form(text);
         let (zero, text) = parse_zero(text);
         let (width, text) = parse_number(text)?;
+        if let Some(w) = width
+            && w > i32::MAX as usize
+        {
+            return Err(FormatSpecError::DecimalDigitsTooMany);
+        }
         let (grouping_option, text) = FormatGrouping::parse(text);
         if let Some(grouping) = &grouping_option {
             Self::validate_separator(grouping, text)?;