Index: lib/libc/amd64/sys/cerror.S
===================================================================
--- lib/libc/amd64/sys/cerror.S
+++ lib/libc/amd64/sys/cerror.S
@@ -39,6 +39,7 @@
 #include "SYS.h"
 
 	.globl HIDENAME(cerror)
+	.hidden HIDENAME(cerror)
 
 	/*
 	 * The __error() function is thread aware. For non-threaded
Index: lib/libc/i386/sys/cerror.S
===================================================================
--- lib/libc/i386/sys/cerror.S
+++ lib/libc/i386/sys/cerror.S
@@ -39,6 +39,7 @@
 #include "SYS.h"
 
 	.globl HIDENAME(cerror)
+	.hidden HIDENAME(cerror)
 
 	/*
 	 * The __error() function is thread aware. For non-threaded