diff --git a/tests/regression_tests/tally_nuclides/tallies.xml b/tests/regression_tests/tally_nuclides/tallies.xml
index 3440dbf21..ea25596a4 100644
--- a/tests/regression_tests/tally_nuclides/tallies.xml
+++ b/tests/regression_tests/tally_nuclides/tallies.xml
@@ -2,7 +2,7 @@
 <tallies>
 
   <tally id="1">
-    <nuclides>all</nuclides>
+    <nuclides>Pu239 total</nuclides>
     <scores>total absorption fission scatter</scores>
   </tally>
 
diff --git a/tests/regression_tests/trigger_batch_interval/tallies.xml b/tests/regression_tests/trigger_batch_interval/tallies.xml
index 3440dbf21..ea25596a4 100644
--- a/tests/regression_tests/trigger_batch_interval/tallies.xml
+++ b/tests/regression_tests/trigger_batch_interval/tallies.xml
@@ -2,7 +2,7 @@
 <tallies>
 
   <tally id="1">
-    <nuclides>all</nuclides>
+    <nuclides>Pu239 total</nuclides>
     <scores>total absorption fission scatter</scores>
   </tally>
 
diff --git a/tests/regression_tests/trigger_no_batch_interval/tallies.xml b/tests/regression_tests/trigger_no_batch_interval/tallies.xml
index 3440dbf21..ea25596a4 100644
--- a/tests/regression_tests/trigger_no_batch_interval/tallies.xml
+++ b/tests/regression_tests/trigger_no_batch_interval/tallies.xml
@@ -2,7 +2,7 @@
 <tallies>
 
   <tally id="1">
-    <nuclides>all</nuclides>
+    <nuclides>Pu239 total</nuclides>
     <scores>total absorption fission scatter</scores>
   </tally>
 
diff --git a/tests/regression_tests/trigger_no_status/tallies.xml b/tests/regression_tests/trigger_no_status/tallies.xml
index 3440dbf21..ea25596a4 100644
--- a/tests/regression_tests/trigger_no_status/tallies.xml
+++ b/tests/regression_tests/trigger_no_status/tallies.xml
@@ -2,7 +2,7 @@
 <tallies>
 
   <tally id="1">
-    <nuclides>all</nuclides>
+    <nuclides>Pu239 total</nuclides>
     <scores>total absorption fission scatter</scores>
   </tally>
 
diff --git a/tests/regression_tests/trigger_tallies/tallies.xml b/tests/regression_tests/trigger_tallies/tallies.xml
index 0d66e1538..ffe8a1a9e 100644
--- a/tests/regression_tests/trigger_tallies/tallies.xml
+++ b/tests/regression_tests/trigger_tallies/tallies.xml
@@ -2,7 +2,7 @@
 <tallies>
 
   <tally id="1">
-    <nuclides>all</nuclides>
+    <nuclides>Pu239 total</nuclides>
     <scores>total absorption fission scatter</scores>
   </tally>