diff --git a/bin/grpc_server_main.cc b/bin/grpc_server_main.cc
index 272ef73..1f69e56 100644
--- a/bin/grpc_server_main.cc
+++ b/bin/grpc_server_main.cc
@@ -18,7 +18,6 @@
 
 #include "decoder/params.h"
 #include "grpc/grpc_server.h"
-#include "utils/wn_log.h"
 
 DEFINE_int32(port, 10086, "grpc listening port");
 DEFINE_int32(workers, 4, "grpc num workers");
diff --git a/bin/http_server_main.cc b/bin/http_server_main.cc
index fa474e6..d4094ff 100644
--- a/bin/http_server_main.cc
+++ b/bin/http_server_main.cc
@@ -14,7 +14,6 @@
 
 #include "decoder/params.h"
 #include "http/http_server.h"
-#include "utils/wn_log.h"
 
 DEFINE_int32(port, 10086, "http listening port");
 
diff --git a/bin/websocket_server_main.cc b/bin/websocket_server_main.cc
index f1bdf16..75fe8c0 100644
--- a/bin/websocket_server_main.cc
+++ b/bin/websocket_server_main.cc
@@ -13,7 +13,6 @@
 // limitations under the License.
 
 #include "decoder/params.h"
-#include "utils/wn_log.h"
 #include "websocket/websocket_server.h"
 
 DEFINE_int32(port, 10086, "websocket listening port");
diff --git a/frontend/wav.h b/frontend/wav.h
index 513ea1f..551cf11 100644
--- a/frontend/wav.h
+++ b/frontend/wav.h
@@ -23,8 +23,6 @@
 
 #include <string>
 
-#include "utils/wn_log.h"
-
 namespace wenet {
 
 struct WavHeader {
diff --git a/grpc/grpc_server.h b/grpc/grpc_server.h
index 0cc3791..a5c05c2 100644
--- a/grpc/grpc_server.h
+++ b/grpc/grpc_server.h
@@ -24,7 +24,6 @@
 
 #include "decoder/asr_decoder.h"
 #include "frontend/feature_pipeline.h"
-#include "utils/wn_log.h"
 
 #include "grpc/wenet.grpc.pb.h"