diff --git a/include/pm3_cmd.h b/include/pm3_cmd.h
index 0983ee2e1..13dca3b6c 100644
--- a/include/pm3_cmd.h
+++ b/include/pm3_cmd.h
@@ -271,7 +271,7 @@ typedef struct {
 typedef struct {
     uint8_t type;
     uint16_t len;
-    uint8_t *data;
+    uint8_t data[];
 } PACKED lf_hitag_t;
 
 typedef struct {