diff --git a/platform/embedded/hal_audio.h b/platform/embedded/hal_audio.h
index 93bead36a..ab78ce446 100644
--- a/platform/embedded/hal_audio.h
+++ b/platform/embedded/hal_audio.h
@@ -40,6 +40,10 @@
 
 #include <stdint.h>
 
+#if defined __cplusplus
+extern "C" {
+#endif
+
 /*
  *  hal_audio.h
  *
@@ -121,4 +125,8 @@ void hal_audio_source_stop(void);
  */
 void hal_audio_source_close(void);
 
+#if defined __cplusplus
+}
+#endif
+
 #endif
diff --git a/src/btstack_uart_block.h b/src/btstack_uart_block.h
index 186e8bd6c..c3c17037d 100644
--- a/src/btstack_uart_block.h
+++ b/src/btstack_uart_block.h
@@ -47,6 +47,10 @@
 #include <stdint.h>
 #include "btstack_uart.h"
 
+#if defined __cplusplus
+extern "C" {
+#endif
+
 typedef btstack_uart_t btstack_uart_block_t;
 
 // existing block-only implementations
@@ -59,4 +63,8 @@ static inline const btstack_uart_block_t * btstack_uart_block_posix_instance(voi
     return (const btstack_uart_block_t *) btstack_uart_posix_instance();
 }
 
+#if defined __cplusplus
+}
+#endif
+
 #endif