diff --git a/drivers/net/util.c b/drivers/net/util.c
index c243dc21..7a2accf6 100644
--- a/drivers/net/util.c
+++ b/drivers/net/util.c
@@ -4,7 +4,7 @@
 __inline int isprint(char e)
 {
 	if (e < 0x30 || e > 0x80)
-		return false;
+		return 0;
 }
 
 // hex_dumb display network packets in a good way