diff --git a/core/kvdb/include/kvdb/kvdb_impl.h b/core/kvdb/include/kvdb/kvdb_impl.h
index 95437d6eb..22144236e 100644
--- a/core/kvdb/include/kvdb/kvdb_impl.h
+++ b/core/kvdb/include/kvdb/kvdb_impl.h
@@ -73,6 +73,7 @@ class FileReader {
           data.append(buffer);
         }
       }
+      pclose(stream);
       return data;
     };
     std::string cmd = "md5sum " + this->filename_;