diff --git a/BTF-playground/btf_module_read.c b/BTF-playground/btf_module_read.c
index 8bebc43..93a29e5 100644
--- a/BTF-playground/btf_module_read.c
+++ b/BTF-playground/btf_module_read.c
@@ -35,9 +35,9 @@ int print_all_levels(enum libbpf_print_level level,
 
 int main(int argc, char **argv)
 {
-	struct btf *vmlinux_btf, *module_btf;
+	struct btf *vmlinux_btf, *module_btf = NULL;
 	int opt, longindex = 0;
-        __s32 type_id;
+	__s32 type_id;
 	int err = 0;
 
 	/* Parse commands line args */
@@ -46,7 +46,6 @@ int main(int argc, char **argv)
 		switch (opt) {
 		case 'd':
 			libbpf_set_print(print_all_levels);
-			// verifier_logs = true;
 			break;
 		default:
 			pr_err("Unrecognized option '%s'\n", argv[optind - 1]);
@@ -66,17 +65,25 @@ int main(int argc, char **argv)
 	module_btf = btf__load_module_btf(module_name, vmlinux_btf);
 	err = libbpf_get_error(module_btf);
 	if (err) {
-		pr_err("ERROR(%d): btf__load_module_btf() module_name:%s\n",
+		pr_err("ERROR(%d): btf__load_module_btf() module_name: %s\n",
 		       err, module_name);
 		goto out;
 	}
 
-        type_id = btf__find_by_name(module_btf, symbol_name);
+	type_id = btf__find_by_name(module_btf, symbol_name);
+	if (type_id < 0) {
+		err = type_id;
+		pr_err("ERROR(%d): btf__find_by_name() symbol_name: %s\n",
+		       err, symbol_name);
+		goto out;
+	}
 
 	printf("Module:%s Symbol:%s have BTF id:%d\n",
 	       module_name, symbol_name, type_id);
 
 out:
+	btf__free(module_btf);
+	btf__free(vmlinux_btf);
 	if (err)
 		return EXIT_FAILURE;
 	return EXIT_SUCCESS;