diff --git a/c_wrapper/build_dll.bat b/c_wrapper/build_dll.bat
index c69304a..1ab8539 100644
--- a/c_wrapper/build_dll.bat
+++ b/c_wrapper/build_dll.bat
@@ -1,2 +1,2 @@
-go build -buildmode=c-shared  -trimpath -ldflags="-s -w"  -o openIM.dll  export.go
+go build -buildmode=c-shared  -trimpath -ldflags="-s -w"  -o openimsdk.dll  export.go
 
diff --git a/c_wrapper/build_run_test.bat b/c_wrapper/build_run_test.bat
index e51da8f..e8fdc3c 100644
--- a/c_wrapper/build_run_test.bat
+++ b/c_wrapper/build_run_test.bat
@@ -1,2 +1,2 @@
-gcc -o test.exe -L. openIM.dll test.c
+gcc -o test.exe -L. openimsdk.dll test.c
 test.exe
\ No newline at end of file
diff --git a/c_wrapper/build_test.bat b/c_wrapper/build_test.bat
index f368158..3950e23 100644
--- a/c_wrapper/build_test.bat
+++ b/c_wrapper/build_test.bat
@@ -1 +1 @@
-gcc -o test.exe -L. openIM.dll test.c
\ No newline at end of file
+gcc -o test.exe -L. openimsdk.dll test.c
\ No newline at end of file