diff --git a/library/alloc/src/ffi/mod.rs b/library/alloc/src/ffi/mod.rs
index 9fc1acc231bff..88947655abf21 100644
--- a/library/alloc/src/ffi/mod.rs
+++ b/library/alloc/src/ffi/mod.rs
@@ -80,7 +80,7 @@
 
 #![stable(feature = "alloc_ffi", since = "1.64.0")]
 
-#[doc(no_inline)]
+#[doc(inline)]
 #[stable(feature = "alloc_c_string", since = "1.64.0")]
 pub use self::c_str::{FromVecWithNulError, IntoStringError, NulError};
 
diff --git a/library/core/src/ffi/mod.rs b/library/core/src/ffi/mod.rs
index 2d78122b8bf15..ecb03ce15b14d 100644
--- a/library/core/src/ffi/mod.rs
+++ b/library/core/src/ffi/mod.rs
@@ -22,7 +22,7 @@ pub use self::c_str::FromBytesWithNulError;
 #[stable(feature = "cstr_from_bytes_until_nul", since = "1.69.0")]
 pub use self::c_str::FromBytesUntilNulError;
 
-#[doc(inline)]
+#[doc(no_inline)]
 #[stable(feature = "core_c_str", since = "1.64.0")]
 pub use self::c_str::CStr;