diff --git a/cime_config/buildlib_2.2 b/cime_config/buildlib_2.2
index 7507ed72..343bab26 100755
--- a/cime_config/buildlib_2.2
+++ b/cime_config/buildlib_2.2
@@ -66,7 +66,6 @@ def _main_func():
                      os.path.join(comp_root_dir_ocn, "channel"),
                      os.path.join(comp_root_dir_ocn, "single_column"),
                      os.path.join(comp_root_dir_ocn, "pkgs", "CVMix-src", "src", "shared"),
-                     os.path.join(comp_root_dir_ocn, "pkgs", "M4AGO-sinking-scheme", "src"),
                      os.path.join(comp_root_dir_ocn, "phy"),
                      os.path.join(comp_root_dir_ocn, "trc"),
                      os.path.join(comp_root_dir_ocn, "idlage")]
@@ -77,6 +76,7 @@ def _main_func():
                         continue
                     elif module == "ecosys":
                         paths.append(os.path.join(comp_root_dir_ocn, "hamocc"))
+                        paths.append(os.path.join(comp_root_dir_ocn, "pkgs", "M4AGO-sinking-scheme", "src"))
                     else:
                         expect(False, "tracer module {} is not recognized".format(module))