diff --git a/src/object.c b/src/object.c
index 15eaf0508..8d64be50c 100644
--- a/src/object.c
+++ b/src/object.c
@@ -1133,7 +1133,7 @@ sds getMemoryDoctorReport(void) {
         /* Clients using more than 200k each average? */
         long numslaves = listLength(server.slaves);
         long numclients = listLength(server.clients)-numslaves;
-        if (mh->clients_normal / numclients > (1024*200)) {
+        if ((numclients > 0) && mh->clients_normal / numclients > (1024*200)) {
             big_client_buf = 1;
             num_reports++;
         }