diff --git a/CESM.cfg b/CESM.cfg
index acfb4f26f7..c960bd2635 100644
--- a/CESM.cfg
+++ b/CESM.cfg
@@ -1,4 +1,4 @@
-[ctsm]
+[clm]
 local_path = .
 protocol = externals_only
 externals = CLM.cfg