diff --git a/arch/um/os-Linux/trap.c b/arch/um/os-Linux/trap.c
index 1df231a26244b0ee3e95982e98e3946a60fc51e3..d221214d2ed543d1bf6ad9d4462d0ba7b907dfea 100644
--- a/arch/um/os-Linux/trap.c
+++ b/arch/um/os-Linux/trap.c
@@ -16,6 +16,7 @@ void usr2_handler(int sig, union uml_pt_regs *regs)
 	CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0);
 }
 
+/* Initialized from linux_main() */
 void (*sig_info[NSIG])(int, union uml_pt_regs *);
 
 void os_fill_handlinfo(struct kern_handlers h)