diff --git a/cime_config/buildnml b/cime_config/buildnml
index 414811abe6..e06b9388c7 100644
--- a/cime_config/buildnml
+++ b/cime_config/buildnml
@@ -75,8 +75,7 @@ def buildnml(case, caseroot, compname):
     run_reftod = case.get_value("RUN_REFTOD")
     start_tod = case.get_value("START_TOD")
     glc_nec = case.get_value("GLC_NEC")
-    cism_use_antarctica = case.get_value("CISM_USE_ANTARCTICA")
-    dglc_use_antarctica = case.get_value("DGLC_USE_ANTARCTICA")
+    glc_use_antarctica = case.get_value("GLC_USE_ANTARCTICA")
     mask = case.get_value("MASK_GRID")
     driver = case.get_value("COMP_INTERFACE").lower()
 
@@ -247,12 +246,9 @@ def buildnml(case, caseroot, compname):
     else:
         nomeg = ""
 
-    glc_use_antarctica = cism_use_antarctica
     if glc_use_antarctica is None:
-        glc_use_antarctica = dglc_use_antarctica
-    if glc_use_antarctica is None:
-        # This is the case for compsets without CISM or DGLC, where the
-        # CISM_USE_ANTARCTICA and DGLC_USE_ANTARCTICA xml variables are not defined
+        # This is the case for compsets with SGLC where the GLC_USE_ANTARCTICA xml
+        # variable isn't defined
         glc_use_antarctica_flag = ""
     elif isinstance(glc_use_antarctica, bool):
         if glc_use_antarctica:
@@ -260,16 +256,10 @@ def buildnml(case, caseroot, compname):
         else:
             glc_use_antarctica_flag = ""
     else:
-        if cism_use_antarctia:
-            expect(
-                False,
-                "Unexpected value for CISM_USE_ANTARCTICA: {}".format(cism_use_antarctica),
-            )
-        else:
-            expect(
-                False,
-                "Unexpected value for DGLC_USE_ANTARCTICA: {}".format(dglc_use_antarctica),
-            )
+        expect(
+            False,
+            "Unexpected value for GLC_USE_ANTARCTICA: {}".format(glc_use_antarctica),
+        )
 
     if clm_nml_use_case != "UNSET":
         usecase = "-use_case %s" % clm_nml_use_case