diff --git a/java/src/main/native/ai_onnxruntime_OrtTrainingSession.c b/java/src/main/native/ai_onnxruntime_OrtTrainingSession.c
index 9f7b8d3a3dcfc..464234c34798a 100644
--- a/java/src/main/native/ai_onnxruntime_OrtTrainingSession.c
+++ b/java/src/main/native/ai_onnxruntime_OrtTrainingSession.c
@@ -66,7 +66,7 @@ JNIEXPORT jlong JNICALL Java_ai_onnxruntime_OrtTrainingSession_createTrainingSes
     }
   }
   wchar_t* optimizerStr = NULL;
-  if (optimizerPath == NULL) {
+  if (optimizerPath != NULL) {
     optimizerStr = copyAndPad(jniEnv, optimizerPath);
     if (optimizerStr == NULL) {
       // exception has been thrown in Java, go to cleanup and return null.