diff --git a/include/nuttx/circbuf.h b/include/nuttx/circbuf.h
index 3295c175cf..0b2ba990ce 100644
--- a/include/nuttx/circbuf.h
+++ b/include/nuttx/circbuf.h
@@ -37,6 +37,12 @@
 #include <stdbool.h>
 #include <sys/types.h>
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define CIRCBUF_INITIALIZER(base, size) { base, size, 0, 0, true }
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/