diff --git a/ports/psoc6/machine_i2s.c b/ports/psoc6/machine_i2s.c
index a0947202d9fe3..61a0c2878d78f 100644
--- a/ports/psoc6/machine_i2s.c
+++ b/ports/psoc6/machine_i2s.c
@@ -230,13 +230,14 @@ static void i2s_dma_from_ringbuf_to_dmabuf(machine_i2s_obj_t *self) {
 }
 
 static void fill_app_buffer(machine_i2s_obj_t *self) {
-    for (uint16_t i = 0; i < SIZEOF_HALF_DMA_BUFFER; i++)
+    for (uint16_t i = 0; i < SIZEOF_HALF_DMA_BUFFER_IN_BYTES; i++)
     {
         // uint32_t value = i | (i + 1) << 8 | (i + 2) << 16 | (i + 3) << 24;
         // self->dma_idle_buf_p[i] = value;
-        for (uint8_t j = 0; j < 4; j++) {
-            ringbuf_push(&self->ring_buffer, i + j);
-        }
+        // for (uint8_t j = 0; j < 4; j++) {
+        // ringbuf_push(&self->ring_buffer, i + j);
+        ringbuf_push(&self->ring_buffer, i);
+        // }
     }
 }