diff --git a/idf_component.yml b/idf_component.yml
index 1319626..a94fd90 100644
--- a/idf_component.yml
+++ b/idf_component.yml
@@ -1,4 +1,4 @@
-version: "3.4.2"
+version: "3.4.3"
 description: "Library for communication with RFID / NFC cards using MFRC522 module"
 url: "https://github.com/abobija/esp-idf-rc522"
 repository: "https://github.com/abobija/esp-idf-rc522.git"
diff --git a/include/picc/rc522_nxp.h b/include/picc/rc522_nxp.h
index 0251d09..46b90a2 100644
--- a/include/picc/rc522_nxp.h
+++ b/include/picc/rc522_nxp.h
@@ -36,7 +36,7 @@
 #include "rc522_picc.h"
 #include "rc522_types.h"
 
-#ifdef __cplusus
+#ifdef __cplusplus
 extern "C" {
 #endif