diff --git a/source/include/libsmbclient.h b/source/include/libsmbclient.h
index 74d0d5c..818173f 100644
--- a/source/include/libsmbclient.h
+++ b/source/include/libsmbclient.h
@@ -2561,6 +2561,10 @@ smbc_version(void);
 }
 #endif
 
+
+
+struct  SMBC_internal_data;
+
 /**
  * @ingroup structure
  * Structure that contains a client context information