diff --git a/predictor/src/pdserving.cpp b/predictor/src/pdserving.cpp
index be7f988744b6ef0530c8b725cb3d6275725831ec..3fc1eed7b632b68be1c5c9f39db63f260319d48c 100644
--- a/predictor/src/pdserving.cpp
+++ b/predictor/src/pdserving.cpp
@@ -143,7 +143,7 @@ int main(int argc, char** argv) {
 
   std::string filename(argv[0]);
   filename = filename.substr(filename.find_last_of('/') + 1);
-  settings.log_file = (std::string("./log/") + filename + ".log").c_str();
+  settings.log_file = strdup((std::string("./log/") + filename + ".log").c_str());
   settings.delete_old = logging::DELETE_OLD_LOG_FILE;
   logging::InitLogging(settings);