diff --git a/src/rfcomm.h b/src/rfcomm.h
index 0f7dda2b1..2790e23e7 100644
--- a/src/rfcomm.h
+++ b/src/rfcomm.h
@@ -209,6 +209,7 @@ typedef enum {
 
 typedef struct rfcomm_channel_event {
     RFCOMM_CHANNEL_EVENT type;
+    uint16_t dummy; // force rfcomm_channel_event to be 2-byte aligned -> avoid -Wcast-align warning
 } rfcomm_channel_event_t;
 
 typedef struct rfcomm_channel_event_pn {