1 files changed, 1 insertions, 1 deletions
diff --git a/rubysig.h b/rubysig.h
index aadc869bd9..a43c166bf2 100644
--- a/rubysig.h
+++ b/rubysig.h
@@ -10,7 +10,7 @@
 #ifndef SIG_H
 #define SIG_H
 
-extern int rb_trap_immediate;
+EXTERN int rb_trap_immediate;
 #define TRAP_BEG (rb_trap_immediate=1)
 #define TRAP_END (rb_trap_immediate=0)