diff --git a/src/libguac/protocol.c b/src/libguac/protocol.c
index 284c94b5..ff903c4b 100644
--- a/src/libguac/protocol.c
+++ b/src/libguac/protocol.c
@@ -981,9 +981,6 @@ int guac_protocol_send_required(guac_socket* socket, const char** required) {
     
     guac_socket_instruction_begin(socket);
     
-    // The socket should be kept alive while waiting for user response.
-    guac_socket_require_keep_alive(socket);
-    
     if (guac_socket_write_string(socket, "8.required"))
         return -1;
 
diff --git a/src/protocols/rdp/rdp.c b/src/protocols/rdp/rdp.c
index fb52dff5..75a20bda 100644
--- a/src/protocols/rdp/rdp.c
+++ b/src/protocols/rdp/rdp.c
@@ -258,8 +258,9 @@ static BOOL rdp_freerdp_authenticate(freerdp* instance, char** username,
         pthread_mutex_lock(&(rdp_client->rdp_credential_lock));
         
         /* Send require params and flush socket. */
-        guac_protocol_send_required(client->socket, (const char**) params);
-        guac_socket_flush(client->socket);
+        guac_socket_require_keep_alive(client->__owner->socket);
+        guac_protocol_send_required(client->__owner->socket, (const char**) params);
+        guac_socket_flush(client->__owner->socket);
         
         /* Wait for condition. */
         pthread_cond_wait(&(rdp_client->rdp_credential_cond), &(rdp_client->rdp_credential_lock));
diff --git a/src/protocols/ssh/ssh.c b/src/protocols/ssh/ssh.c
index 74e0e8cb..d2bc5b12 100644
--- a/src/protocols/ssh/ssh.c
+++ b/src/protocols/ssh/ssh.c
@@ -76,9 +76,10 @@ static void guac_ssh_get_credential(guac_client *client, char* cred_name) {
     /* Lock the terminal thread while prompting for the credential. */
     pthread_mutex_lock(&(ssh_client->term_channel_lock));
     
-    /* Let the client know what we require and flush the socket. */
-    guac_protocol_send_required(client->socket, (const char* []) {cred_name, NULL});
-    guac_socket_flush(client->socket);
+    /* Let the owner know what we require and flush the socket. */
+    guac_socket_require_keep_alive(client->__owner->socket);
+    guac_protocol_send_required(client->__owner->socket, (const char* []) {cred_name, NULL});
+    guac_socket_flush(client->__owner->socket);
     
     /* Wait for the response, and then unlock the thread. */
     pthread_cond_wait(&(ssh_client->ssh_credential_cond), &(ssh_client->term_channel_lock));
diff --git a/src/protocols/vnc/auth.c b/src/protocols/vnc/auth.c
index 47aae87f..6ea21a38 100644
--- a/src/protocols/vnc/auth.c
+++ b/src/protocols/vnc/auth.c
@@ -42,9 +42,10 @@ char* guac_vnc_get_password(rfbClient* client) {
         pthread_mutex_lock(&(vnc_client->vnc_credential_lock));
         
         /* Send the request for password and flush the socket. */
-        guac_protocol_send_required(gc->socket,
+        guac_socket_require_keep_alive(gc->__owner->socket);
+        guac_protocol_send_required(gc->__owner->socket,
                 (const char* []) {"password", NULL});
-        guac_socket_flush(gc->socket);
+        guac_socket_flush(gc->__owner->socket);
         
         /* Set the conditional flag. */
         vnc_client->vnc_credential_flags |= GUAC_VNC_COND_FLAG_PASSWORD;