diff --git a/crates/ruff_linter/src/rules/pep8_naming/rules/camelcase_imported_as_constant.rs b/crates/ruff_linter/src/rules/pep8_naming/rules/camelcase_imported_as_constant.rs
index e41ac229c40449..dae4a24218c7cb 100644
--- a/crates/ruff_linter/src/rules/pep8_naming/rules/camelcase_imported_as_constant.rs
+++ b/crates/ruff_linter/src/rules/pep8_naming/rules/camelcase_imported_as_constant.rs
@@ -54,7 +54,7 @@ pub(crate) fn camelcase_imported_as_constant(
     ignore_names: &IgnoreNames,
 ) -> Option<Diagnostic> {
     // Single-character names are ambiguous. It could be a class or a constant.
-    if asname.chars().count() == 1 {
+    if asname.chars().skip(1).next().is_none() {
         return None;
     }
 
diff --git a/crates/ruff_linter/src/rules/pep8_naming/rules/constant_imported_as_non_constant.rs b/crates/ruff_linter/src/rules/pep8_naming/rules/constant_imported_as_non_constant.rs
index f71c5abd634f30..aef85ac15e8be3 100644
--- a/crates/ruff_linter/src/rules/pep8_naming/rules/constant_imported_as_non_constant.rs
+++ b/crates/ruff_linter/src/rules/pep8_naming/rules/constant_imported_as_non_constant.rs
@@ -53,7 +53,7 @@ pub(crate) fn constant_imported_as_non_constant(
     ignore_names: &IgnoreNames,
 ) -> Option<Diagnostic> {
     // Single-character names are ambiguous. It could be a class or a constant.
-    if name.chars().count() == 1 {
+    if name.chars().skip(1).next().is_none() {
         return None;
     }