diff --git a/examples/SoftIBus14m/SoftIBus14m.ino b/examples/SoftIBus14m/SoftIBus14m.ino
index 6d43904..0121ca2 100644
--- a/examples/SoftIBus14m/SoftIBus14m.ino
+++ b/examples/SoftIBus14m/SoftIBus14m.ino
@@ -23,7 +23,7 @@ void setup()
 
 void loop()
 {
-  static int inibus;
+  static uint16_t inibus;
   IBus.loop();
   for (int i = 0; i < ch; i++)
   {
diff --git a/examples/SoftIBus14mTelemetry/SoftIBus14mTelemetry.ino b/examples/SoftIBus14mTelemetry/SoftIBus14mTelemetry.ino
index b9b32b0..f3c7dce 100644
--- a/examples/SoftIBus14mTelemetry/SoftIBus14mTelemetry.ino
+++ b/examples/SoftIBus14mTelemetry/SoftIBus14mTelemetry.ino
@@ -40,7 +40,7 @@ void setup()
 
 void loop()
 {
-  static int inibus;
+  static uint16_t inibus;
   IBus.loop();
   for (int i = 0; i < ch; i++)
   {
diff --git a/src/SoftIBus.cpp b/src/SoftIBus.cpp
index 3ff544c..ed17152 100644
--- a/src/SoftIBus.cpp
+++ b/src/SoftIBus.cpp
@@ -29,7 +29,7 @@ void SIBus::loop(void)
     }
     last = now;
     
-   uint16_t v = stream->read(); /* uint8_t v = stream->read(); */
+   uint8_t v = stream->read(); /* uint8_t v = stream->read(); */
     switch (state)
     {
       case GET_LENGTH:
@@ -62,7 +62,7 @@ void SIBus::loop(void)
 
       case GET_CHKSUMH:
         // Validate checksum
-        if (chksum == (v << 8) + lchksum)
+       if (chksum == static_cast<uint16_t>(v << 8) + lchksum)  //if (chksum == (v << 8) + lchksum)
         {
           // Execute command - we only know command 0x40
           switch (buffer[0])