diff --git a/src/write_data.h b/src/write_data.h
index b1d2b747ef..ced6a3be8b 100644
--- a/src/write_data.h
+++ b/src/write_data.h
@@ -35,7 +35,7 @@ class WriteData : protected Pointers {
   int me,nprocs;
   int pairflag;
   int coeffflag;
-  int extraflag;
+  int fixflag;
   FILE *fp;
   bigint nbonds_local,nbonds;
   bigint nangles_local,nangles;