diff --git a/lib/libc/include/libc_private.h b/lib/libc/include/libc_private.h
--- a/lib/libc/include/libc_private.h
+++ b/lib/libc/include/libc_private.h
@@ -414,8 +414,6 @@
 int		__libc_sigprocmask(int, const __sigset_t *, __sigset_t *)
 		    __hidden;
 int		__libc_sigsuspend(const __sigset_t *) __hidden;
-int		__libc_sigwait(const __sigset_t * __restrict,
-		    int * restrict sig);
 int		__libc_system(const char *);
 int		__libc_tcdrain(int);
 int		__fcntl_compat(int fd, int cmd, ...);
diff --git a/lib/libsys/Makefile.sys b/lib/libsys/Makefile.sys
--- a/lib/libsys/Makefile.sys
+++ b/lib/libsys/Makefile.sys
@@ -37,7 +37,8 @@
 	__getosreldate.c \
 	getpagesize.c \
 	getpagesizes.c \
-	interposing_table.c
+	interposing_table.c \
+	libsys_sigwait.c
 
 SRCS+= getdents.c lstat.c mknod.c stat.c
 
diff --git a/lib/libsys/Symbol.sys.map b/lib/libsys/Symbol.sys.map
--- a/lib/libsys/Symbol.sys.map
+++ b/lib/libsys/Symbol.sys.map
@@ -433,7 +433,6 @@
 
 FBSDprivate_1.0 {
 	/* Add entries in sort(1) order */
-	__libc_sigwait;
 	__libsys_interposing_slot;
 	__set_error_selector;
 	__sigwait;
diff --git a/lib/libsys/interposing_table.c b/lib/libsys/interposing_table.c
--- a/lib/libsys/interposing_table.c
+++ b/lib/libsys/interposing_table.c
@@ -29,9 +29,12 @@
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <errno.h>
 #include <sys/types.h>
 #include "libc_private.h"
 
+int __libsys_sigwait(const sigset_t *set, int *sig);
+
 #define	SLOT(a, b) \
 	[INTERPOS_##a] = (interpos_func_t)b
 interpos_func_t __libsys_interposing[INTERPOS_MAX] = {
@@ -59,7 +62,7 @@
 	SLOT(sigaction, __sys_sigaction),
 	SLOT(sigprocmask, __sys_sigprocmask),
 	SLOT(sigsuspend, __sys_sigsuspend),
-	SLOT(sigwait, __libc_sigwait),
+	SLOT(sigwait, __libsys_sigwait),
 	SLOT(sigtimedwait, __sys_sigtimedwait),
 	SLOT(sigwaitinfo, __sys_sigwaitinfo),
 	SLOT(swapcontext, __sys_swapcontext),
diff --git a/lib/libsys/sigwait.c b/lib/libsys/libsys_sigwait.c
copy from lib/libsys/sigwait.c
copy to lib/libsys/libsys_sigwait.c
--- a/lib/libsys/sigwait.c
+++ b/lib/libsys/libsys_sigwait.c
@@ -25,27 +25,20 @@
  * SUCH DAMAGE.
  */
 
-#include <errno.h>
 #include <signal.h>
+#include <errno.h>
 #include "libc_private.h"
 
-__weak_reference(__libc_sigwait, __sigwait);
-
-#pragma weak sigwait
-int
-sigwait(const sigset_t *set, int *sig)
-{
-	return (((int (*)(const sigset_t *, int *))
-	    __libsys_interposing[INTERPOS_sigwait])(set, sig));
-}
+/* XXX: why does this symbol exist? */
+__weak_reference(__libsys_sigwait, __sigwait);
 
 int
-__libc_sigwait(const sigset_t *set, int *sig)
+__libsys_sigwait(const sigset_t *set, int *sig)
 {
 	int ret;
 
 	/* POSIX does not allow EINTR to be returned */
-	do  {
+	do {
 		ret = __sys_sigwait(set, sig);
 	} while (ret == EINTR);
 	return (ret);
diff --git a/lib/libsys/sigwait.c b/lib/libsys/sigwait.c
--- a/lib/libsys/sigwait.c
+++ b/lib/libsys/sigwait.c
@@ -25,12 +25,9 @@
  * SUCH DAMAGE.
  */
 
-#include <errno.h>
 #include <signal.h>
 #include "libc_private.h"
 
-__weak_reference(__libc_sigwait, __sigwait);
-
 #pragma weak sigwait
 int
 sigwait(const sigset_t *set, int *sig)
@@ -38,15 +35,3 @@
 	return (((int (*)(const sigset_t *, int *))
 	    __libsys_interposing[INTERPOS_sigwait])(set, sig));
 }
-
-int
-__libc_sigwait(const sigset_t *set, int *sig)
-{
-	int ret;
-
-	/* POSIX does not allow EINTR to be returned */
-	do  {
-		ret = __sys_sigwait(set, sig);
-	} while (ret == EINTR);
-	return (ret);
-}