diff --git a/gui.c b/gui.c
index 6f5bf23..dbbfb81 100644
--- a/gui.c
+++ b/gui.c
@@ -4,6 +4,7 @@
 #include <math.h>
 #include <jack/jack.h>
 #include <ncurses.h>
+#include <unistd.h>
 #include "engine.h"
 #include "gui.h"
 
@@ -81,12 +82,12 @@ static void gui_update(void)
         /* BPM slider */
         mu_layout_row(ctx, 2, (int[]) { 60, -1 }, 0);
         mu_label(ctx, "BPM:");
-        mu_slider(ctx, &bpm, 20.0f, 300.0f, 0, "%.0f", 0);
+        mu_slider_ex(ctx, &bpm, 20.0f, 300.0f, 0, "%.0f", 0);
 
         /* loop length */
         mu_layout_row(ctx, 2, (int[]) { 60, -1 }, 0);
         mu_label(ctx, "Length:");
-        mu_slider(ctx, (float*)&loop_length, 1.0f, 64.0f, 0, "%.0f", 0);
+        mu_slider_ex(ctx, (float*)&loop_length, 1.0f, 64.0f, 0, "%.0f", 0);
 
         /* beat indicator */
         mu_layout_row(ctx, 1, (int[]) { -1 }, 0);
@@ -174,7 +175,7 @@ int gui_main(Engine *engine)
         }
 
         /* update engine state */
-        current_beat = engine_get_current_beat(g_engine);
+        current_beat = g_engine->transport.bar_position * 4 + g_engine->transport.beat_position;
 
         /* render GUI */
         gui_update();
@@ -184,7 +185,7 @@ int gui_main(Engine *engine)
         while (mu_next_command(ctx, &cmd)) {
             if (cmd->type == MU_COMMAND_TEXT) {
                 mvprintw(cmd->text.pos.y / 18, cmd->text.pos.x / 8, "%.*s",
-                         cmd->text.len, cmd->text.text);
+                         (int)strlen(cmd->text.str), cmd->text.str);
             }
             if (cmd->type == MU_COMMAND_RECT) {
                 /* simple rectangle rendering using ncurses */