diff --git a/amorscan.c b/amorscan.c
index 0e53086..800e60a 100644
--- a/amorscan.c
+++ b/amorscan.c
@@ -135,6 +135,5 @@
       self->WriteHeader = AmorHeader;
       self->WriteScanPoints = AmorPoints;
       self->CollectScanData = AmorCollect;
-      strcpy(self->ext,".hdf");
       return 1; 
   }