diff --git a/guacamole/libguac/client.c b/guacamole/libguac/client.c
index 4d8c1c3f3..2f9449d4d 100644
--- a/guacamole/libguac/client.c
+++ b/guacamole/libguac/client.c
@@ -58,6 +58,7 @@ guac_client* __guac_alloc_client(GUACIO* io) {
 
     /* Allocate new client (not handoff) */
     guac_client* client = malloc(sizeof(guac_client));
+    memset(client, 0, sizeof(guac_client));
 
     /* Init new client */
     client->io = io;