diff --git a/src/evalvars.c b/src/evalvars.c
index 01aef1a..e747230 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -863,7 +863,7 @@
 	return FAIL;
     }
 
-    range_list_materialize(l);
+    CHECK_LIST_MATERIALIZE(l);
     item = l->lv_first;
     while (*arg != ']')
     {