diff --git a/cime_config/testdefs/testlist_clm.xml b/cime_config/testdefs/testlist_clm.xml
index 2ad1f3b4d5..976df654c5 100644
--- a/cime_config/testdefs/testlist_clm.xml
+++ b/cime_config/testdefs/testlist_clm.xml
@@ -3366,7 +3366,7 @@
       <option name="comment">13 month single site FATES smoke test.</option>
     </options>
   </test>
-  <test name="ERS_Lm12" grid="1x1_brazil" compset="I2000Clm50FatesCruRsGs" testmods="clm/FatesFireLightningPopDens">
+  <test name="ERS_Ld366" grid="1x1_brazil" compset="I2000Clm50FatesCruRsGs" testmods="clm/FatesFireLightningPopDens">
     <machines>
       <machine name="derecho" compiler="intel" category="fates"/>
     </machines>