diff --git a/samples/bpf/tracex3_user.c b/samples/bpf/tracex3_user.c
index 6c6b10f4c3ee35b484e30fa4939a1e6a2d344d45..56466d010139477593b5f18b927a7c63e7777219 100644
--- a/samples/bpf/tracex3_user.c
+++ b/samples/bpf/tracex3_user.c
@@ -17,8 +17,6 @@
 #include "bpf_load.h"
 #include "bpf_util.h"
 
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
-
 #define SLOTS 100
 
 static void clear_stats(int fd)