diff --git a/lib/nfc/protocols/felica_util.h b/lib/nfc/protocols/felica_util.h
index de7ff884a..653ba4501 100644
--- a/lib/nfc/protocols/felica_util.h
+++ b/lib/nfc/protocols/felica_util.h
@@ -1,6 +1,14 @@
 #include "./felica.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 uint_least32_t felica_estimate_timing_us(uint_least8_t timing, uint_least8_t units);
 bool felica_lite_is_issued(FelicaLiteInfo* lite_info);
 FuriString* felica_get_system_name(FelicaSystem* system);
-FuriString* felica_get_service_name(FelicaService* service);
\ No newline at end of file
+FuriString* felica_get_service_name(FelicaService* service);
+
+#ifdef __cplusplus
+}
+#endif