diff --git a/main.c b/main.c
index de948a8..7ac723d 100644
--- a/main.c
+++ b/main.c
@@ -98,7 +98,7 @@ hexdecode(char *buf, size_t len, uint8_t *out)
 	uint8_t topchr, botchr;
 
 	if (len % 2)
-		return -1;
+		return false;
 
 	/* NB: only needed to silence a bad gcc warning */
 	topchr = -1;