diff --git a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c
index 4be6d51..59ffbc6 100644
--- a/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c
+++ b/sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c
@@ -92,9 +92,12 @@ void key_receiver(chanend_t c)
 {
     debug_printf("===> key_receiver\n");
 #if DNR_ENABLE
-    while (g_dnr_init_flag == 0) {
+    unsigned dnr_init_flag = 0;
+    while (dnr_init_flag == 0) {
+        GET_SHARED_GLOBAL(dnr_init_flag, g_dnr_init_flag);
         asm("nop");
     }
+
 #endif
    // tile0
     // load the license key
@@ -505,10 +508,10 @@ void hid_receive_task_in_c(unsigned char * RcvData, unsigned * SendData)
 //                    if (cur_mode == IR_MUSIC) {
 //                        sfIdxName = spatial_music;
 //                    } else {
-//                        sfIdxName = spatial_movie;    
+//                        sfIdxName = spatial_movie;
 //                    }
 //                }
-#else   
+#else
                 const char * sfIdxName = "EXTREME";
 #endif
                 int32_t NameLen = strlen(sfIdxName);
@@ -1390,4 +1393,4 @@ int dsp_worker_tile(chanend_t c_dsp_to_ex3d, int worker_id){
     return 0;
 }
 
-#endif
\ No newline at end of file
+#endif