diff --git a/k&r/04-funcs-and-prog-struct/04-grep-grace.c b/k&r/04-funcs-and-prog-struct/04-grep-grace.c
index 604561c..dc7cc80 100644
--- a/k&r/04-funcs-and-prog-struct/04-grep-grace.c
+++ b/k&r/04-funcs-and-prog-struct/04-grep-grace.c
@@ -67,7 +67,7 @@ void println()
 
 /* ------------------------ line buffer ---------------------- */
 
-#define LNBUFF_LEN 8
+#define LNBUFF_LEN 128
 
 /* the line buffer lenght must be a power of two */
 static_assert(!(LNBUFF_LEN % 2), "Line buffer length is not a power of two!");