diff --git a/mbedtls/src/alloc.rs b/mbedtls/src/alloc.rs
index 8a73835eb..ef8bc74ab 100644
--- a/mbedtls/src/alloc.rs
+++ b/mbedtls/src/alloc.rs
@@ -16,9 +16,9 @@ use core::ptr::NonNull;
 use mbedtls_sys::types::raw_types::c_void;
 
 extern "C" {
-    #[link_name = concat!("\u{1}forward_mbedtls_free_", env!("RUST_MBEDTLS_METADATA_HASH"))]
+    #[link_name = concat!("forward_mbedtls_free_", env!("RUST_MBEDTLS_METADATA_HASH"))]
     pub(crate) fn mbedtls_free(n: *mut mbedtls_sys::types::raw_types::c_void);
-    #[link_name = concat!("\u{1}forward_mbedtls_calloc_", env!("RUST_MBEDTLS_METADATA_HASH"))]
+    #[link_name = concat!("forward_mbedtls_calloc_", env!("RUST_MBEDTLS_METADATA_HASH"))]
     pub(crate) fn mbedtls_calloc(
         n: mbedtls_sys::types::size_t,
         size: mbedtls_sys::types::size_t,