diff --git a/src/vim9compile.c b/src/vim9compile.c
index 87bb0e2..889a5d5 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2135,7 +2135,10 @@
 	if (gen_load)
 	    res = generate_LOAD(cctx, ISN_LOAD, idx, NULL, type);
 	if (gen_load_outer)
+	{
 	    res = generate_LOAD(cctx, ISN_LOADOUTER, idx, NULL, type);
+	    cctx->ctx_outer_used = TRUE;
+	}
     }
 
     *arg = end;