diff --git a/src/protocols/ssh/display.c b/src/protocols/ssh/display.c
index 5cd4c2a5..5d2976a2 100644
--- a/src/protocols/ssh/display.c
+++ b/src/protocols/ssh/display.c
@@ -80,6 +80,7 @@ static void __guac_terminal_display_clear_select(guac_terminal_display* display)
     guac_protocol_send_cfill(socket, GUAC_COMP_SRC, select_layer,
             0x00, 0x00, 0x00, 0x00);
 
+    guac_protocol_send_sync(socket, display->client->last_sent_timestamp);
     guac_socket_flush(socket);
 
     /* Text is no longer selected */
@@ -1004,6 +1005,7 @@ void guac_terminal_display_select(guac_terminal_display* display,
     guac_protocol_send_cfill(socket, GUAC_COMP_SRC, select_layer,
             0x00, 0x80, 0xFF, 0x60);
 
+    guac_protocol_send_sync(socket, display->client->last_sent_timestamp);
     guac_socket_flush(socket);
 
 }
diff --git a/src/protocols/ssh/guac_handlers.c b/src/protocols/ssh/guac_handlers.c
index 50778afc..e3a87621 100644
--- a/src/protocols/ssh/guac_handlers.c
+++ b/src/protocols/ssh/guac_handlers.c
@@ -402,6 +402,8 @@ int ssh_guac_client_size_handler(guac_client* client, int width, int height) {
         terminal->scroll_end = rows - 1;
 
         guac_terminal_display_flush(terminal->display);
+        guac_protocol_send_sync(terminal->client->socket,
+                client->last_sent_timestamp);
         guac_socket_flush(terminal->client->socket);
     }
 
diff --git a/src/protocols/ssh/terminal.c b/src/protocols/ssh/terminal.c
index 56a9afa6..2076a077 100644
--- a/src/protocols/ssh/terminal.c
+++ b/src/protocols/ssh/terminal.c
@@ -393,6 +393,8 @@ void guac_terminal_scroll_display_down(guac_terminal* terminal,
     }
 
     guac_terminal_display_flush(terminal->display);
+    guac_protocol_send_sync(terminal->client->socket,
+            terminal->client->last_sent_timestamp);
     guac_socket_flush(terminal->client->socket);
 
 }
@@ -450,6 +452,8 @@ void guac_terminal_scroll_display_up(guac_terminal* terminal,
     }
 
     guac_terminal_display_flush(terminal->display);
+    guac_protocol_send_sync(terminal->client->socket,
+            terminal->client->last_sent_timestamp);
     guac_socket_flush(terminal->client->socket);
 
 }