diff --git a/libc/private/bionic_tls.h b/libc/private/bionic_tls.h
index 2ca7728..9d3f4c5 100644
--- a/libc/private/bionic_tls.h
+++ b/libc/private/bionic_tls.h
@@ -121,7 +121,7 @@
 
 #if defined(__cplusplus)
 class KernelArgumentBlock;
-extern __LIBC_HIDDEN__ void __libc_init_main_thread(KernelArgumentBlock& args);
+extern __LIBC_HIDDEN__ void __libc_init_main_thread(KernelArgumentBlock&);
 #endif
 
 #endif /* __BIONIC_PRIVATE_BIONIC_TLS_H_ */