diff --git a/MOM6/CMakeLists.txt b/MOM6/CMakeLists.txt
index ff501e6..987133c 100644
--- a/MOM6/CMakeLists.txt
+++ b/MOM6/CMakeLists.txt
@@ -97,6 +97,7 @@ target_sources(OM3_mom6 PRIVATE
   MOM6/src/equation_of_state/MOM_EOS_Wright.F90
   MOM6/src/equation_of_state/MOM_EOS_Wright_full.F90
   MOM6/src/equation_of_state/MOM_EOS_Wright_red.F90
+  MOM6/src/equation_of_state/MOM_EOS_base_type.F90
   MOM6/src/equation_of_state/MOM_temperature_convert.F90
   MOM6/src/equation_of_state/MOM_TFreeze.F90