diff --git a/src/btstack_util.h b/src/btstack_util.h
index 5579d7e70..88646b6a8 100644
--- a/src/btstack_util.h
+++ b/src/btstack_util.h
@@ -194,7 +194,7 @@ int nibble_for_char(char c);
  * @brief Compare two Bluetooth addresses
  * @param a
  * @param b
- * @return true if equal
+ * @return 0 if equal
  */
 int bd_addr_cmp(const bd_addr_t a, const bd_addr_t b);