diff --git a/include/linphone/im_encryption_engine.h b/include/linphone/im_encryption_engine.h
index a65fac88e..9141c5361 100644
--- a/include/linphone/im_encryption_engine.h
+++ b/include/linphone/im_encryption_engine.h
@@ -22,6 +22,10 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 #include "linphone/types.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * @addtogroup misc
  * @{
@@ -242,4 +246,8 @@ LINPHONE_PUBLIC void linphone_im_encryption_engine_cbs_set_generate_file_transfe
  * @}
  */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* LINPHONE_IM_ENCRYPTION_ENGINE_H */