diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c
index 32ba5761e7..f487fe60ee 100644
--- a/src/class/audio/audio_device.c
+++ b/src/class/audio/audio_device.c
@@ -312,7 +312,7 @@ typedef struct
 
 #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP
   struct {
-    uint32_t value;       // Feedback value for asynchronous mode (in 16.16 format).
+    CFG_TUSB_MEM_ALIGN uint32_t value;  // Feedback value for asynchronous mode (in 16.16 format).
     uint32_t min_value;   // min value according to UAC2 FMT-2.0 section 2.3.1.1.
     uint32_t max_value;   // max value according to UAC2 FMT-2.0 section 2.3.1.1.