diff --git a/include/SDF/sdf.h b/include/SDF/sdf.h
index 39831245529ba2e0e8f0d519afafc4eb623a36e5..b6c2d93d62ca3c4476361dce487d04434d2e2532 100644
--- a/include/SDF/sdf.h
+++ b/include/SDF/sdf.h
@@ -225,6 +225,8 @@ int SDF_OpenDevice(void **phDeviceHandle);
 
 int SDF_CloseDevice(void *hDeviceHandle);
 
+int SDF_OpenDeviceWithConf(void **phDeviceHandle, const char* configFile);
+
 int SDF_OpenSession(void *hDeviceHandle, void **phSessionHandle);
 
 int SDF_CloseSession(void *hSessionHandle);