diff --git a/src/pkg/runtime/freebsd/386/signal.c b/src/pkg/runtime/freebsd/386/signal.c
index 3600f0762a..2fe7ecd707 100644
--- a/src/pkg/runtime/freebsd/386/signal.c
+++ b/src/pkg/runtime/freebsd/386/signal.c
@@ -111,6 +111,8 @@ runtime·sighandler(int32 sig, Siginfo *info, void *context, G *gp)
 	runtime·exit(2);
 }
 
+// Called from kernel on signal stack, so no stack split.
+#pragma textflag 7
 void
 runtime·sigignore(void)
 {
diff --git a/src/pkg/runtime/freebsd/amd64/signal.c b/src/pkg/runtime/freebsd/amd64/signal.c
index 85cb1d8552..8015e366e6 100644
--- a/src/pkg/runtime/freebsd/amd64/signal.c
+++ b/src/pkg/runtime/freebsd/amd64/signal.c
@@ -119,6 +119,8 @@ runtime·sighandler(int32 sig, Siginfo *info, void *context, G *gp)
 	runtime·exit(2);
 }
 
+// Called from kernel on signal stack, so no stack split.
+#pragma textflag 7
 void
 runtime·sigignore(void)
 {