diff --git a/Cargo.toml b/Cargo.toml
index 0bb763f..6260935 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -78,7 +78,6 @@ str_to_string = "warn"
 string_add = "warn"
 string_add_assign = "warn"
 string_lit_as_bytes = "warn"
-string_to_string = "warn"
 todo = "warn"
 trait_duplication_in_bounds = "warn"
 uninlined_format_args = "warn"