diff --git a/test-files/cmd/glacial/NonDestructiveConflationTest.sh b/test-files/cmd/glacial/NonDestructiveConflationTest.sh
index d796976..990d186 100755
--- a/test-files/cmd/glacial/NonDestructiveConflationTest.sh
+++ b/test-files/cmd/glacial/NonDestructiveConflationTest.sh
@@ -17,7 +17,7 @@ hoot changeset-derive -C Testing.conf --stats \
test-output/cmd/glacial/NonDestructiveTest/changeset.osc
# Check the output against the expected output
-hoot diff \
+hoot diff -C Testing.conf \
test-output/cmd/glacial/NonDestructiveTest/output.osm \
test-files/cmd/glacial/NonDestructiveTest/Expected.osm || \
diff \