diff --git a/src/device/dcd.h b/src/device/dcd.h
index 2248cd392..8a890cec3 100644
--- a/src/device/dcd.h
+++ b/src/device/dcd.h
@@ -70,7 +70,7 @@ typedef struct TU_ATTR_ALIGNED(4)
   uint8_t rhport;
   uint8_t event_id;
 
-   union
+  union
   {
     // BUS RESET
     struct {