diff --git a/src/vim9compile.c b/src/vim9compile.c
index fada134..06098d8 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -3263,6 +3263,7 @@
 	    semsg(_(e_trailing_arg), s);
 	clear_instr_ga(&cctx->ctx_instr);
 	cctx->ctx_instr = save_ga;
+	++cctx->ctx_type_stack.ga_len;
 	return FAIL;
     }