diff --git a/inputparser.cpp b/inputparser.cpp
index 59fbe6c..305fa58 100644
--- a/inputparser.cpp
+++ b/inputparser.cpp
@@ -30,4 +30,4 @@ bool InputParser::cmdOptionExists(const std::string &option) const {
            != this->tokens.end();
 }
 
-std::vector <std::string> tokens;
\ No newline at end of file
+std::vector <std::string> tokens;
diff --git a/inputparser.h b/inputparser.h
index 078e9aa..4e3cb4b 100644
--- a/inputparser.h
+++ b/inputparser.h
@@ -14,4 +14,4 @@ class InputParser {
         bool cmdOptionExists(const std::string &option) const;
 };
 
-#endif // ___INPUTPARSER_H
\ No newline at end of file
+#endif // ___INPUTPARSER_H
diff --git a/inverter.conf b/inverter.conf
index 709f642..acdc588 100644
--- a/inverter.conf
+++ b/inverter.conf
@@ -22,11 +22,11 @@ amperage_factor=1.0
 # reading compared to measurement tools.  Normally this will remain '1'
 watt_factor=1.01
 
-# Depending on the protocol version used and your device, 
+# Depending on the protocol version used and your device,
 # you might need to change the following parameters
 
 #### For Axpert VM3 inverter like, use those values ###
-# This allows you to modify the buffersize for the qpiri command 
+# This allows you to modify the buffersize for the qpiri command
 qpiri=98
 
 # This allows you to modify the buffersize for the qpiws command
diff --git a/inverter.cpp b/inverter.cpp
index ce3dd5e..37acaac 100644
--- a/inverter.cpp
+++ b/inverter.cpp
@@ -86,11 +86,11 @@ bool cInverter::query(const char *cmd) {
     cfsetspeed(&settings, baud);      // baud rate
     settings.c_cflag &= ~PARENB;       // no parity
     settings.c_cflag &= ~CSTOPB;       // 1 stop bit
-    settings.c_cflag &= ~CSIZE;        // Clear all bits that set the data size 
+    settings.c_cflag &= ~CSIZE;        // Clear all bits that set the data size
     settings.c_cflag |= CS8 | CLOCAL;  // 8 bits
 
     settings.c_oflag &= ~OPOST;        // Prevent special interpretation of output bytes (e.g. newline chars)
-    settings.c_lflag &= ~ICANON;       
+    settings.c_lflag &= ~ICANON;
     settings.c_iflag &= ~(IXON | IXOFF | IXANY); // Turn off s/w flow ctrl
     settings.c_lflag &= ~ISIG;
     settings.c_oflag &= ~ONLCR; // Prevent conversion of newline to carriage return/line feed
@@ -135,7 +135,7 @@ bool cInverter::query(const char *cmd) {
                 if (buf[j] == 0x0d){
                     reading = false;
                     replysize = j+1;
-                    printf("INVERTER: stop byte detected, buffersize might be %d for %s ", replysize, cmd);
+                    lprintf("INVERTER: stop byte detected, buffersize might be %d for %s ", replysize, cmd);
                     break;
                 }
             }
diff --git a/inverter.h b/inverter.h
index 67091b0..17f09e5 100644
--- a/inverter.h
+++ b/inverter.h
@@ -5,6 +5,8 @@
 #include <thread>
 #include <mutex>
 
+#include <string>
+
 using namespace std;
 
 class cInverter {