diff --git a/src/vim9compile.c b/src/vim9compile.c
index 075bd12..338fbc6 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -1430,8 +1430,8 @@
 		    continue;
 		expected = ufunc->uf_arg_types[i];
 	    }
-	    else if (ufunc->uf_va_type == NULL)
-		// possibly a lambda
+	    else if (ufunc->uf_va_type == NULL || ufunc->uf_va_type == &t_any)
+		// possibly a lambda or "...: any"
 		expected = &t_any;
 	    else
 		expected = ufunc->uf_va_type->tt_member;