diff --git a/c/mapping/mapper_put.c b/c/mapping/mapper_put.c
index b32416bf7..009873762 100644
--- a/c/mapping/mapper_put.c
+++ b/c/mapping/mapper_put.c
@@ -220,13 +220,11 @@ static sllv_t* mapper_put_process(lrec_t* pinrec, context_t* pctx, void* pvstate
 			// Filter statement
 			mv_t val = pevaluator->pprocess_func(pinrec, pctx, pevaluator->pvstate);
 			if (val.type == MT_NULL) {
-				lrec_free(pinrec);
-				return NULL;
+				break;
 			}
 			mv_set_boolean_strict(&val);
 			if (!(val.u.boolv ^ pstate->filter_exclude)) {
-				lrec_free(pinrec);
-				return NULL;
+				break;
 			}
 		}
 	}
diff --git a/c/todo.txt b/c/todo.txt
index d1b2a1799..ee91f1112 100644
--- a/c/todo.txt
+++ b/c/todo.txt
@@ -8,6 +8,8 @@ TOP OF LIST
 
 * filter-then-put with capture-groups
   ! bracing @ mld:ref:put
+
+  ! code/doc put-filter -> expression gate. & restore full filter-doc section at mld.
   o expanded lrec_context or some such for the regex backcaptures; or (better) within lrec_t itself
   ! pointer integrity for backcaptures followed by unlinks/renames etc. ... strdup them?
   o name clash for \1 \2 etc.: