diff --git a/Cargo.toml b/Cargo.toml
index c05f7f66f5..92bd94de32 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,7 +46,7 @@ improper_ctypes_definitions = "deny"
 internal_features = "allow" # core_intrinsics and lang_items
 irrefutable_let_patterns = "deny"
 mismatched_lifetime_syntaxes = "deny"
-non_camel_case_types = "allow"
+non_camel_case_types = "allow" # needed for most POSIX type names
 non_snake_case = "allow" # TODO review occuurences
 non_upper_case_globals = "allow" # TODO review occuurences
 unexpected_cfgs = "deny"