diff --git a/I2CManager_Mega4809.h b/I2CManager_Mega4809.h
index 551b4f9..a8254a9 100644
--- a/I2CManager_Mega4809.h
+++ b/I2CManager_Mega4809.h
@@ -72,7 +72,7 @@ void I2CManagerClass::I2C_sendStart() {
   bytesToReceive = currentRequest->readLen;
 
   // If anything to send, initiate write.  Otherwise initiate read.
-  if (operation == OPERATION_READ || (operation == OPERATION_REQUEST & !bytesToSend))
+  if (operation == OPERATION_READ || ((operation == OPERATION_REQUEST) & !bytesToSend))
     TWI0.MADDR = (currentRequest->i2cAddress << 1) | 1;
   else
     TWI0.MADDR = (currentRequest->i2cAddress << 1) | 0;
@@ -157,4 +157,4 @@ ISR(TWI0_TWIM_vect) {
   I2CManagerClass::handleInterrupt();
 }
 
-#endif
\ No newline at end of file
+#endif