diff --git a/test_engine.c b/test_engine.c
index faedd6e..03ee725 100644
--- a/test_engine.c
+++ b/test_engine.c
@@ -552,7 +552,7 @@ void test_sample_position_calculation(void) {
         (engine->transport->clock_count * engine->sample_rate * 4) / 
         (MIDI_CLOCKS_PER_BEAT * BEATS_PER_BAR);
     
-    assert(engine->transport.sample_position == engine->sample_rate);  // 1 beat = 48000 samples
+    assert(engine->transport->sample_position == engine->sample_rate);  // 1 beat = 48000 samples
     
     // After 96 clocks (4 beats = 1 bar)
     engine->transport->clock_count = MIDI_CLOCKS_PER_BEAT * 4;
@@ -560,7 +560,7 @@ void test_sample_position_calculation(void) {
         (engine->transport->clock_count * engine->sample_rate * 4) / 
         (MIDI_CLOCKS_PER_BEAT * BEATS_PER_BAR);
     
-    assert(engine->transport.sample_position == engine->sample_rate * 4);  // 1 bar = 192000 samples
+    assert(engine->transport->sample_position == engine->sample_rate * 4);  // 1 bar = 192000 samples
     
     destroy_test_engine(engine);
     printf("PASSED\n");