diff --git a/tests/test_cmfd_feed/cmfd.xml b/tests/test_cmfd_feed/cmfd.xml
index 891d264167..390e558639 100644
--- a/tests/test_cmfd_feed/cmfd.xml
+++ b/tests/test_cmfd_feed/cmfd.xml
@@ -12,6 +12,7 @@
dominance
power
true
- 1.e-15
+ 1.e-15
+ 1.e-20
diff --git a/tests/test_cmfd_nofeed/cmfd.xml b/tests/test_cmfd_nofeed/cmfd.xml
index 710b3a7d16..4a4bf30108 100644
--- a/tests/test_cmfd_nofeed/cmfd.xml
+++ b/tests/test_cmfd_nofeed/cmfd.xml
@@ -12,6 +12,7 @@
dominance
power
false
- 1.e-15
+ 1.e-15
+ 1.e-20