diff --git a/test/bin/json_process.c b/test/bin/json_process.c
index ab8c063..cd271dc 100644
--- a/test/bin/json_process.c
+++ b/test/bin/json_process.c
@@ -305,6 +305,7 @@ int use_env()
     }
 
     json_dumpf(json, stdout, flags);
+    json_decref(json);
 
     return 0;
 }