diff --git a/include/onnxruntime/core/session/onnxruntime_c_api.h b/include/onnxruntime/core/session/onnxruntime_c_api.h
index 799cc63262..ccd7580e4f 100644
--- a/include/onnxruntime/core/session/onnxruntime_c_api.h
+++ b/include/onnxruntime/core/session/onnxruntime_c_api.h
@@ -92,11 +92,11 @@ typedef enum ONNXType {
 } ONNXType;
 
 typedef enum OrtLoggingLevel {
-  ORT_LOGGING_LEVEL_kVERBOSE,
-  ORT_LOGGING_LEVEL_kINFO,
-  ORT_LOGGING_LEVEL_kWARNING,
-  ORT_LOGGING_LEVEL_kERROR,
-  ORT_LOGGING_LEVEL_kFATAL,
+  ORT_LOGGING_LEVEL_VERBOSE,
+  ORT_LOGGING_LEVEL_INFO,
+  ORT_LOGGING_LEVEL_WARNING,
+  ORT_LOGGING_LEVEL_ERROR,
+  ORT_LOGGING_LEVEL_FATAL,
 } OrtLoggingLevel;
 
 typedef enum OrtErrorCode {
diff --git a/onnxruntime/test/onnx/main.cc b/onnxruntime/test/onnx/main.cc
index 89c99cdb08..4d9bb61d94 100644
--- a/onnxruntime/test/onnx/main.cc
+++ b/onnxruntime/test/onnx/main.cc
@@ -82,7 +82,7 @@ int real_main(int argc, char* argv[]) {
   bool enable_cuda = false;
   bool enable_mkl = false;
   bool enable_nuphar = false;
-  OrtLoggingLevel logging_level = ORT_LOGGING_LEVEL_kWARNING;
+  OrtLoggingLevel logging_level = ORT_LOGGING_LEVEL_WARNING;
   {
     int ch;
     while ((ch = getopt(argc, argv, ORT_TSTR("Ac:hj:m:n:r:e:xv"))) != -1) {
@@ -91,7 +91,7 @@ int real_main(int argc, char* argv[]) {
           enable_cpu_mem_arena = false;
           break;
         case 'v':
-          logging_level = ORT_LOGGING_LEVEL_kINFO;
+          logging_level = ORT_LOGGING_LEVEL_INFO;
           break;
         case 'c':
           concurrent_session_runs = static_cast<int>(MyStrtol<PATH_CHAR_TYPE>(optarg, nullptr, 10));
diff --git a/onnxruntime/test/shared_lib/fns_candy_style_transfer.c b/onnxruntime/test/shared_lib/fns_candy_style_transfer.c
index c5e0d9d60a..86a37bf310 100644
--- a/onnxruntime/test/shared_lib/fns_candy_style_transfer.c
+++ b/onnxruntime/test/shared_lib/fns_candy_style_transfer.c
@@ -198,7 +198,7 @@ int main(int argc, char* argv[]) {
   char* input_file = argv[2];
   char* output_file = argv[3];
   OrtEnv* env;
-  ORT_ABORT_ON_ERROR(OrtInitialize(ORT_LOGGING_LEVEL_kWARNING, "test", &env));
+  ORT_ABORT_ON_ERROR(OrtInitialize(ORT_LOGGING_LEVEL_WARNING, "test", &env));
   OrtSessionOptions* session_option = OrtCreateSessionOptions();
 #ifdef USE_CUDA
   enable_cuda(session_option);
diff --git a/onnxruntime/test/shared_lib/test_fixture.h b/onnxruntime/test/shared_lib/test_fixture.h
index d510240fc3..20b5cb877e 100644
--- a/onnxruntime/test/shared_lib/test_fixture.h
+++ b/onnxruntime/test/shared_lib/test_fixture.h
@@ -22,9 +22,9 @@ class CApiTestImpl : public ::testing::Test {
 
   void SetUp() override {
     if (use_customer_logger) {
-      ORT_THROW_ON_ERROR(OrtInitializeWithCustomLogger(MyLoggingFunction, nullptr, ORT_LOGGING_LEVEL_kINFO, "Default", &env));
+      ORT_THROW_ON_ERROR(OrtInitializeWithCustomLogger(MyLoggingFunction, nullptr, ORT_LOGGING_LEVEL_INFO, "Default", &env));
     } else {
-      ORT_THROW_ON_ERROR(OrtInitialize(ORT_LOGGING_LEVEL_kINFO, "Default", &env));
+      ORT_THROW_ON_ERROR(OrtInitialize(ORT_LOGGING_LEVEL_INFO, "Default", &env));
     }
   }