diff --git a/BrainATUMtome/serialpackage.cpp b/BrainATUMtome/serialpackage.cpp
index f15be0b..b5bc578 100644
--- a/BrainATUMtome/serialpackage.cpp
+++ b/BrainATUMtome/serialpackage.cpp
@@ -22,8 +22,7 @@ QString SerialPackage::parse(bool &ok, const QString &message)
 
     // check received checksum
     quint8 checksumReceived = 0;
-    if (!unpack(checksumReceived, buffer.mid(buffer.size() - 2, 2)))
-        ok = false;
+    unpack(checksumReceived, buffer.mid(buffer.size() - 2, 2));
 
     // remove checksum from buffer
     buffer.remove(buffer.size() - 2, 2);
@@ -41,30 +40,6 @@ QString SerialPackage::package(const QString &message)
 }
 
 
-quint8 SerialPackage::address(const QString &message)
-{
-    quint8 value;
-    if (unpack(value, message.mid(0, 2))) {
-        return value;
-    }
-    else {
-        return 0;
-    }
-}
-
-
-quint8 SerialPackage::command(const QString &message)
-{
-    quint8 value;
-    if (unpack(value, message.mid(2, 2))) {
-        return value;
-    }
-    else {
-        return 0;
-    }
-}
-
-
 quint8 SerialPackage::checksum(const QString &message)
 {
     quint8 valueChecksum = 0;
@@ -99,27 +74,21 @@ QString SerialPackage::pack(quint32 value)
 }
 
 
-bool SerialPackage::unpack(quint8 &value, const QString &textValue)
+void SerialPackage::unpack(quint8 &value, const QString &textValue)
 {
-    bool ok;
-    value = static_cast<quint8>(textValue.toUInt(&ok, 16));
-    return ok;
+    value = static_cast<quint8>(textValue.toUInt(nullptr, 16));
 }
 
 
-bool SerialPackage::unpack(quint16 &value, const QString &textValue)
+void SerialPackage::unpack(quint16 &value, const QString &textValue)
 {
-    bool ok;
-    value = static_cast<quint16>(textValue.toUInt(&ok, 16));
-    return ok;
+    value = static_cast<quint16>(textValue.toUInt(nullptr, 16));
 }
 
 
-bool SerialPackage::unpack(quint32 &value, const QString &textValue)
+void SerialPackage::unpack(quint32 &value, const QString &textValue)
 {
-    bool ok;
-    value = static_cast<quint32>(textValue.toUInt(&ok, 16));
-    return ok;
+    value = static_cast<quint32>(textValue.toUInt(nullptr, 16));
 }
 
 
diff --git a/BrainATUMtome/serialpackage.h b/BrainATUMtome/serialpackage.h
index f1cc972..740cd74 100644
--- a/BrainATUMtome/serialpackage.h
+++ b/BrainATUMtome/serialpackage.h
@@ -12,17 +12,15 @@ class SerialPackage
     static QString parse(bool &ok, const QString &message);
     static QString package(const QString &message);
 
-    static quint8 address(const QString &message);
-    static quint8 command(const QString &message);
     static quint8 checksum(const QString &message);
 
     static QString pack(quint8 value);
     static QString pack(quint16 value);
     static QString pack(quint32 value);
 
-    static bool unpack(quint8 &value, const QString &textValue);
-    static bool unpack(quint16 &value, const QString &textValue);
-    static bool unpack(quint32 &value, const QString &textValue);
+    static void unpack(quint8 &value, const QString &textValue);
+    static void unpack(quint16 &value, const QString &textValue);
+    static void unpack(quint32 &value, const QString &textValue);
 };
 
 #endif // SERIALPACKAGE_H