diff --git a/include/osmocore/utils.h b/include/osmocore/utils.h
new file mode 100644
index 0000000..198f45a
--- /dev/null
+++ b/include/osmocore/utils.h
@@ -0,0 +1,6 @@
+#ifndef OSMOCORE_UTIL_H
+#define OSMOCORE_UTIL_H
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#endif