diff --git a/cdm/core/src/main/java/ucar/nc2/filter/ConvertMissing.java b/cdm/core/src/main/java/ucar/nc2/filter/ConvertMissing.java
index cd2c71ac7b..73835864c7 100644
--- a/cdm/core/src/main/java/ucar/nc2/filter/ConvertMissing.java
+++ b/cdm/core/src/main/java/ucar/nc2/filter/ConvertMissing.java
@@ -5,9 +5,7 @@
 import ucar.ma2.IndexIterator;
 import ucar.nc2.Attribute;
 import ucar.nc2.constants.CDM;
-import ucar.nc2.constants.DataFormatType;
 import ucar.nc2.dataset.VariableDS;
-import ucar.nc2.iosp.netcdf3.N3iosp;
 import ucar.nc2.util.Misc;
 
 public class ConvertMissing {