diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 2c6f06e8..dc0d5e75 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -23,7 +23,7 @@ function(copy_test_data name)
 endfunction()
 
 # Copy test data file into buiild directory for testing.
-copy_test_data(ref_gdaswave.t00z.wcoast.0p16.f000.grb2index)
+copy_test_data(gdaswave.t00z.wcoast.0p16.f000.grib2)
 
 # Run these shell tests.
 shell_test(run_wgrib2_tests)