diff --git a/src/print.c b/src/print.c
index 245fb91..e7e9e71 100644
--- a/src/print.c
+++ b/src/print.c
@@ -44,7 +44,7 @@ static char *frame_cr(enum patty_ax25_frame_cr cr) {
 }
 
 static int print_addr(FILE *fh, const patty_ax25_addr *addr) {
-    char buf[PATTY_AX25_ADDRSTRLEN];
+    char buf[PATTY_AX25_ADDRSTRLEN+1];
 
     if (patty_ax25_ntop(addr, buf, sizeof(buf)) < 0) {
         goto error_ntop;