diff --git a/sys/include/net/bluetil/addr.h b/sys/include/net/bluetil/addr.h
index 205000b056..2d998863b8 100644
--- a/sys/include/net/bluetil/addr.h
+++ b/sys/include/net/bluetil/addr.h
@@ -73,6 +73,9 @@ void bluetil_addr_print(const uint8_t *addr);
 /**
  * @brief   Parse a BLE address from the given string
  *
+ * @note    The address is expected most significant byte first and is written
+ *          to @p addr in network byte order
+ *
  * @param[out] addr     buffer to write the BLE address, *must* be able to hold
  *                      @ref BLE_ADDR_LEN bytes
  * @param[in] addr_str  address string, must be at least of length
diff --git a/sys/net/ble/bluetil/bluetil_addr/bluetil_addr.c b/sys/net/ble/bluetil/bluetil_addr/bluetil_addr.c
index ba4b56d74d..e8b6489a1c 100644
--- a/sys/net/ble/bluetil/bluetil_addr/bluetil_addr.c
+++ b/sys/net/ble/bluetil/bluetil_addr/bluetil_addr.c
@@ -78,12 +78,12 @@ uint8_t *bluetil_addr_from_str(uint8_t *addr, const char *addr_str)
         }
     }
 
-    unsigned pos = BLE_ADDR_LEN;
+    unsigned pos = 0;
     for (unsigned i = 0; i < (BLUETIL_ADDR_STRLEN - 1); i += 3) {
         if (!_is_hex_char(addr_str[i]) || !_is_hex_char(addr_str[i + 1])) {
             return NULL;
         }
-        addr[--pos] = fmt_hex_byte(addr_str + i);
+        addr[pos++] = fmt_hex_byte(addr_str + i);
     }
     return addr;
 }