diff --git a/modbus.h b/modbus.h
index eae774c..5cb2b45 100644
--- a/modbus.h
+++ b/modbus.h
@@ -52,7 +52,7 @@ THE POSSIBILITY OF SUCH DAMAGE.
 
 /* define baudrate of modbus */
 #ifndef BAUD
-#define BAUD 38400L
+#define BAUD 115200L
 #endif
 
 /*