diff --git a/lib_xua/src/core/buffer/ep/ep_buffer.xc b/lib_xua/src/core/buffer/ep/ep_buffer.xc
index e8de973a..d0fb1adf 100644
--- a/lib_xua/src/core/buffer/ep/ep_buffer.xc
+++ b/lib_xua/src/core/buffer/ep/ep_buffer.xc
@@ -1031,7 +1031,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
 
 #if (XUA_SYNCMODE == XUA_SYNCMODE_SYNC)
             case c_audio_rate_change :> u_tmp:
-                printstr("c_audio_rate_change\n");
+                printstr("rc\n");
                 unsigned selected_mclk_rate = u_tmp;
                 c_audio_rate_change :> u_tmp;                       /* Sample rate is discarded as only care about mclk */
 #if (XUA_USE_SW_PLL)
@@ -1051,7 +1051,7 @@ void XUA_Buffer_Ep(register chanend c_aud_out,
             /* This is fired when sw_pll has completed initialising a new mclk_rate */
             case inuint_byref(c_sw_pll, u_tmp):
                 inct(c_sw_pll);
-                printstr("SWPLL synch\n");
+                printstr("sy\n");
                 c_audio_rate_change <: 0;     /* ACK back to audio to release */
                 
                 break;
diff --git a/lib_xua/src/core/clocking/sw_pll_wrapper.xc b/lib_xua/src/core/clocking/sw_pll_wrapper.xc
index 04397396..beb69ee8 100644
--- a/lib_xua/src/core/clocking/sw_pll_wrapper.xc
+++ b/lib_xua/src/core/clocking/sw_pll_wrapper.xc
@@ -138,6 +138,7 @@ void sw_pll_task(chanend c_sw_pll){
         timer tmr;
         int32_t time_trigger;
         tmr :> time_trigger;
+        time_trigger += sdm_interval; /* ensure first loop has correct delay */
         int running = 1;
 
         outuint(c_sw_pll, 0); /* Signal back via clockgen to audio to start I2S */