diff --git a/lib/Exporter.js b/lib/Exporter.js
index fdccaddf0..6bd641a82 100644
--- a/lib/Exporter.js
+++ b/lib/Exporter.js
@@ -411,12 +411,12 @@ function getOgrParams( format, inFile, outFile, geojson, options ){
     }
 
     // make sure field names are not truncated multiple times
-    cmd.push('-append');
     cmd.push('-fieldmap');
     cmd.push('identity');
 
   }
 
+  cmd.push('-append');
   cmd.push('-skipfailures');
   cmd.push('-lco');
   cmd.push('ENCODING=UTF-8');