diff --git a/libraries/DataFlash/DFMessageWriter.h b/libraries/DataFlash/DFMessageWriter.h
index 0dd2fae6d7..159fa8f611 100644
--- a/libraries/DataFlash/DFMessageWriter.h
+++ b/libraries/DataFlash/DFMessageWriter.h
@@ -104,8 +104,6 @@ private:
     AP_Param::ParamToken token;
     AP_Param *ap;
     enum ap_var_type type;
-    uint16_t num_format_types;
-    const struct LogStructure *_structures;
 
 
     DFMessageWriter_WriteSysInfo _writesysinfo;