diff --git a/src/evalbuffer.c b/src/evalbuffer.c
index f11727c..adbbca3 100644
--- a/src/evalbuffer.c
+++ b/src/evalbuffer.c
@@ -183,7 +183,7 @@
 		rettv->vval.v_number = 1;	// FAIL
 	    goto done;
 	}
-	range_list_materialize(l);
+	CHECK_LIST_MATERIALIZE(l);
 	li = l->lv_first;
     }
     else