fix header typo

diff --git a/include/termios.h b/include/termios.h
index 3ae853d87ecfb776c2beb64d59531be71bf9e192..76908839ca6e604cc71ca1eb534c6bf3429acc85 100644 (file)
--- a/include/termios.h
+++ b/include/termios.h
@@ -32,7 +32,7 @@ int tcflow (int, int);
 
 pid_t tcgetsid (int);
 
-#ifdef _GNUS_SOURCE
+#ifdef _GNU_SOURCE
 void cfmakeraw(struct termios *);
 int cfsetspeed(struct termios *, speed_t);
 #endif