diff --git a/src/piler-smtp.c b/src/piler-smtp.c
index b5fd262..f52f126 100644
--- a/src/piler-smtp.c
+++ b/src/piler-smtp.c
@@ -135,7 +135,6 @@
    int client_len = sizeof(struct sockaddr_storage);
    ssize_t readlen;
    struct sockaddr_storage client_address;
-   char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
    char readbuf[BIGBUFSIZE];
    int efd;
 
@@ -257,6 +256,10 @@
                   }
                }
 
+               char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
+               memset(hbuf, 0, sizeof(hbuf));
+               memset(sbuf, 0, sizeof(sbuf));
+
                if(getnameinfo((struct sockaddr *)&client_address, client_len, hbuf, sizeof(hbuf), sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV) == 0){
                   // Strictly speaking it's not correct to log num_connections+1 connections
                   // but it still gives a good clue how many connections we have at the moment