diff --git a/tests/libs/hdf5/test-env-variables-new/C/H5T/test.sh.in b/tests/libs/hdf5/test-env-variables-new/C/H5T/test.sh.in
index efffdb56df..f9acd0bc86 100755
--- a/tests/libs/hdf5/test-env-variables-new/C/H5T/test.sh.in
+++ b/tests/libs/hdf5/test-env-variables-new/C/H5T/test.sh.in
@@ -68,6 +68,7 @@ do
     if test $status -ne 0
     then
         echo "  FAILED!"
+        diff -u tmp.test $srcdir/testfiles/$H5_LIBVER_DIR/$fname.tst > $fname.tst.diff.log
     else
         dumpout $fname.h5 >tmp.test
       rm -f $fname.h5
@@ -76,6 +77,7 @@ do
       if test $status -ne 0
       then
           echo "  FAILED!"
+          diff -u tmp.test $srcdir/testfiles/$H5_LIBVER_DIR/$fname.ddl > $fname.ddl.diff.log
       else
           echo "  Passed"
       fi