diff --git a/regtests/unittests/test_io.F90 b/regtests/unittests/test_io.F90
index 46d46b404..ccd7243e1 100644
--- a/regtests/unittests/test_io.F90
+++ b/regtests/unittests/test_io.F90
@@ -103,12 +103,11 @@ program test_io
   print *, 'OK!'
   
   print *, 'testing reading the WW3 binary point file in netCDF...'
-  ! call w3iopon('READ', ndsop, iotest)
-  ! print *, iotest
-  ! if (iotest .ne. 0) stop 100
-  ! print *, 'OK!'
+  call w3iopon('READ', ndsop, iotest)
+  print *, iotest
+  if (iotest .ne. 0) stop 100
+  print *, 'OK!'
 
-  
   print *, 'OK!'
   
   print *, 'SUCCESS!'