diff --git a/lib/libc/sys/openat.c b/lib/libc/sys/openat.c
--- a/lib/libc/sys/openat.c
+++ b/lib/libc/sys/openat.c
@@ -37,7 +37,6 @@
 __weak_reference(__sys_openat, __openat);
 __sym_compat(openat, __impl_openat, FBSD_1.1);
 __weak_reference(openat, __impl_openat);
-__sym_default(openat, openat, FBSD_1.2);
 
 #pragma weak openat
 int
diff --git a/lib/libc/sys/setcontext.c b/lib/libc/sys/setcontext.c
--- a/lib/libc/sys/setcontext.c
+++ b/lib/libc/sys/setcontext.c
@@ -36,7 +36,6 @@
 __weak_reference(__sys_setcontext, __setcontext);
 __sym_compat(setcontext, __impl_setcontext, FBSD_1.0);
 __weak_reference(setcontext, __impl_setcontext);
-__sym_default(setcontext, setcontext, FBSD_1.2);
 
 #pragma weak setcontext
 int
diff --git a/lib/libc/sys/swapcontext.c b/lib/libc/sys/swapcontext.c
--- a/lib/libc/sys/swapcontext.c
+++ b/lib/libc/sys/swapcontext.c
@@ -38,7 +38,6 @@
 __weak_reference(__sys_swapcontext, __swapcontext);
 __sym_compat(swapcontext, __impl_swapcontext, FBSD_1.0);
 __weak_reference(swapcontext, __impl_swapcontext);
-__sym_default(swapcontext, swapcontext, FBSD_1.2);
 
 #pragma weak swapcontext
 int
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
@@ -301,6 +301,8 @@
 	cap_getmode;
 	getloginclass;
 	getpagesizes;
+	openat;
+	pdfork;
 	pdgetpid;
 	pdkill;
 	posix_fallocate;
@@ -309,7 +311,9 @@
 	rctl_get_limits;
 	rctl_add_rule;
 	rctl_remove_rule;
+	setcontext;
 	setloginclass;
+	swapcontext;
 };
 
 FBSD_1.3 {