diff --git a/versionnumber.cpp b/versionnumber.cpp
index 37149a3b..bc7c8195 100644
--- a/versionnumber.cpp
+++ b/versionnumber.cpp
@@ -39,18 +39,18 @@ void VersionNumber::setStrings(const QString &value)
     QString debian_str;
 
     // Parse epoch and upstream_version
-    if (value.contains(QLatin1Char(':'))) {
-        epoch = value.section(QLatin1Char(':'), 0, 0).toInt();
-        upstream_str = value.section(QLatin1Char(':'), 1);
+    if (value.contains(':')) {
+        epoch = value.section(':', 0, 0).toInt();
+        upstream_str = value.section(':', 1);
     } else {
         epoch = 0;
         upstream_str = value;
     }
 
     // Parse debian_revision
-    if (upstream_str.contains(QLatin1Char('-'))) {
-        debian_str = upstream_str.section(QLatin1Char('-'), -1);
-        upstream_str = upstream_str.remove(QLatin1Char('-') + debian_str);
+    if (upstream_str.contains('-')) {
+        debian_str = upstream_str.section('-', -1);
+        upstream_str = upstream_str.remove('-' + debian_str);
     }
 
     upstream_version = groupDigits(upstream_str);
@@ -150,6 +150,7 @@ int VersionNumber::compare(const QStringList &first, const QStringList &second)
             return -1;
         }
 
+        // if one char length check which one is larger
         if (first.at(i).length() == 1 && second.at(i).length() == 1) {
             int res = compare(first.at(i).at(0), second.at(i).at(0));
             if (res == 0) {
@@ -157,12 +158,14 @@ int VersionNumber::compare(const QStringList &first, const QStringList &second)
             } else {
                 return res;
             }
+            // one char (not-number) vs. multiple (digits)
         } else if (first.at(i).length() > 1 && second.at(i).length() == 1 && !second.at(i).at(0).isDigit()) {
             return 1;
         } else if (first.at(i).length() == 1 && !first.at(i).at(0).isDigit() && second.at(i).length() > 1) {
             return -1;
         }
 
+        // Compare remaining digits
         if (second.at(i).toInt() > first.at(i).toInt()) {
             return 1;
         } else {
diff --git a/versionnumber.h b/versionnumber.h
index 529036eb..bcf434e2 100644
--- a/versionnumber.h
+++ b/versionnumber.h
@@ -81,12 +81,12 @@ class VersionNumber
     VersionNumber &operator=(const VersionNumber &value) = default;
     VersionNumber &operator=(const QString &value);
 
-    bool operator<(const VersionNumber &value) const;
-    bool operator<=(const VersionNumber &value) const;
-    bool operator>(const VersionNumber &value) const;
-    bool operator>=(const VersionNumber &value) const;
-    bool operator==(const VersionNumber &value) const;
-    bool operator!=(const VersionNumber &value) const;
+    [[nodiscard]] bool operator<(const VersionNumber &value) const;
+    [[nodiscard]] bool operator<=(const VersionNumber &value) const;
+    [[nodiscard]] bool operator>(const VersionNumber &value) const;
+    [[nodiscard]] bool operator>=(const VersionNumber &value) const;
+    [[nodiscard]] bool operator==(const VersionNumber &value) const;
+    [[nodiscard]] bool operator!=(const VersionNumber &value) const;
 
 private:
     QString str; // Full version string
@@ -94,13 +94,14 @@ class VersionNumber
     QStringList upstream_version; // A string list of characters, numbers are grouped together
     QStringList debian_revision;
 
-    static QStringList groupDigits(const QString &value); // Add characters to separate elements, groups digits together
+    // Add characters to separate elements, groups digits together
+    [[nodiscard]] static QStringList groupDigits(const QString &value);
     void setStrings(const QString &value);
 
-    [[nodiscard]] int compare(const VersionNumber &first,
-                              const VersionNumber &second) const; // 1 for >second, -1 for <second, 0 for equal
-    static int compare(const QStringList &first, const QStringList &second);
-    static int compare(QChar first, QChar second);
+    // 1 for > second, -1 for < second, 0 for equal
+    [[nodiscard]] int compare(const VersionNumber &first, const VersionNumber &second) const;
+    [[nodiscard]] static int compare(const QStringList &first, const QStringList &second);
+    [[nodiscard]] static int compare(QChar first, QChar second);
 };
 
 Q_DECLARE_METATYPE(VersionNumber)