diff --git a/lisp/Linux-os.h b/lisp/Linux-os.h
index 6a6ad9ebd92f71169c9f5efe14a3fd4b541db4c7..c50cb29b79f128480a57fdffe807364d798d747e 100644
--- a/lisp/Linux-os.h
+++ b/lisp/Linux-os.h
@@ -58,6 +58,7 @@ typedef struct sigcontext_struct sigcontext;
 #define sigcontext	sigcontext_struct 
 #define sa_sigaction	sa_handler
 #define SA_SIGINFO	0
+#define sc_efl		eflags
 
 #define sc_eax eax
 #define sc_ecx ecx