diff --git a/krusader/Archive/abstractthreadedjob.h b/krusader/Archive/abstractthreadedjob.h
--- a/krusader/Archive/abstractthreadedjob.h
+++ b/krusader/Archive/abstractthreadedjob.h
@@ -39,7 +39,7 @@
 class AbstractJobThread;
 class QTemporaryDir;
 class UserEvent;
-class KRarcObserver;
+class KrArcObserver;
 class QTemporaryFile;
 
 class AbstractThreadedJob : public KIO::Job
@@ -97,7 +97,7 @@
     virtual ~AbstractJobThread();
 
     void abort();
-    KRarcObserver * observer();
+    KrArcObserver * observer();
 
 protected slots:
     virtual void slotStart() = 0;
@@ -140,7 +140,7 @@
     QEventLoop          *_loop;
 
     QTemporaryDir       *_downloadTempDir;
-    KRarcObserver       *_observer;
+    KrArcObserver       *_observer;
 
     QTemporaryFile      *_tempFile;
     QString              _tempFileName;
diff --git a/krusader/Archive/abstractthreadedjob.cpp b/krusader/Archive/abstractthreadedjob.cpp
--- a/krusader/Archive/abstractthreadedjob.cpp
+++ b/krusader/Archive/abstractthreadedjob.cpp
@@ -248,7 +248,7 @@
     emit description(this, mytitle, field1, field2);
 }
 
-class AbstractJobObserver : public KRarcObserver
+class AbstractJobObserver : public KrArcObserver
 {
 protected:
     AbstractJobThread * _jobThread;
@@ -519,7 +519,7 @@
     delete calcSpaceFileSystem;
 }
 
-KRarcObserver * AbstractJobThread::observer()
+KrArcObserver * AbstractJobThread::observer()
 {
     if (_observer)
         return _observer;
diff --git a/krusader/Archive/krarchandler.h b/krusader/Archive/krarchandler.h
--- a/krusader/Archive/krarchandler.h
+++ b/krusader/Archive/krarchandler.h
@@ -35,11 +35,11 @@
 class Wallet;
 }
 
-class KRarcObserver : public QObject
+class KrArcObserver : public QObject
 {
     Q_OBJECT
 public:
-    ~KRarcObserver() override = default;
+    ~KrArcObserver() override = default;
 
     virtual void processEvents() = 0;
     virtual void subJobStarted(const QString & jobTitle, int count) = 0;
@@ -59,13 +59,13 @@
     explicit KrArcHandler(QObject *parent = nullptr);
 
     // return the number of files in the archive
-    long arcFileCount(const QString& archive, const QString& type, const QString& password, KRarcObserver *observer);
+    long arcFileCount(const QString& archive, const QString& type, const QString& password, KrArcObserver *observer);
     // unpack an archive to destination directory
-    bool unpack(QString archive, const QString& type, const QString& password, const QString& dest, KRarcObserver *observer );
+    bool unpack(QString archive, const QString& type, const QString& password, const QString& dest, KrArcObserver *observer );
     // pack an archive to destination directory
-    bool pack(QStringList fileNames, QString type, const QString& dest, long count, QMap<QString, QString> extraProps, KRarcObserver *observer );
+    bool pack(QStringList fileNames, QString type, const QString& dest, long count, QMap<QString, QString> extraProps, KrArcObserver *observer );
     // test an archive
-    bool test(const QString& archive, const QString& type, const QString& password, KRarcObserver *observer, long count = 0L );
+    bool test(const QString& archive, const QString& type, const QString& password, KrArcObserver *observer, long count = 0L );
     // returns `true` if the right unpacker exist in the system
     static bool arcSupported(QString type);
     // return the list of supported packers
diff --git a/krusader/Archive/krarchandler.cpp b/krusader/Archive/krarchandler.cpp
--- a/krusader/Archive/krarchandler.cpp
+++ b/krusader/Archive/krarchandler.cpp
@@ -46,11 +46,11 @@
 #include "../../krArc/krlinecountingprocess.h"
 
 #if 0
-class DefaultKRarcObserver : public KRarcObserver
+class DefaultKrArcObserver : public KrArcObserver
 {
 public:
-    DefaultKRarcObserver() {}
-    virtual ~DefaultKRarcObserver() {}
+    DefaultKrArcObserver() {}
+    virtual ~DefaultKrArcObserver() {}
 
     virtual void processEvents() override {
         usleep(1000);
@@ -195,7 +195,7 @@
            || (type == "7z" && lst.contains("7z"));
 }
 
-long KrArcHandler::arcFileCount(const QString& archive, const QString& type, const QString& password, KRarcObserver *observer)
+long KrArcHandler::arcFileCount(const QString& archive, const QString& type, const QString& password, KrArcObserver *observer)
 {
     int divideWith = 1;
 
@@ -274,7 +274,7 @@
     return count / divideWith;
 }
 
-bool KrArcHandler::unpack(QString archive, const QString& type, const QString& password, const QString& dest, KRarcObserver *observer)
+bool KrArcHandler::unpack(QString archive, const QString& type, const QString& password, const QString& dest, KrArcObserver *observer)
 {
     KConfigGroup group(krConfig, "Archives");
     if (group.readEntry("Test Before Unpack", _TestBeforeUnpack)) {
@@ -374,9 +374,9 @@
     // tell the user to wait
     observer->subJobStarted(i18n("Unpacking File(s)"), count);
     if (count != 0) {
-        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KRarcObserver::incrementProgress);
+        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KrArcObserver::incrementProgress);
         if (type == "rpm")
-            connect(&proc, &KrLinecountingProcess::newErrorLines, observer, &KRarcObserver::incrementProgress);
+            connect(&proc, &KrLinecountingProcess::newErrorLines, observer, &KrArcObserver::incrementProgress);
     }
 
     // start the unpacking process
@@ -404,7 +404,7 @@
     return true; // SUCCESS
 }
 
-bool KrArcHandler::test(const QString& archive, const QString& type, const QString& password, KRarcObserver *observer, long count)
+bool KrArcHandler::test(const QString& archive, const QString& type, const QString& password, KrArcObserver *observer, long count)
 {
     // choose the right packer for the job
     QStringList packer;
@@ -448,7 +448,7 @@
     // tell the user to wait
     observer->subJobStarted(i18n("Testing Archive"), count);
     if (count != 0)
-        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KRarcObserver::incrementProgress);
+        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KrArcObserver::incrementProgress);
 
     // start the unpacking process
     proc.start();
@@ -470,7 +470,7 @@
     return true; // SUCCESS
 }
 
-bool KrArcHandler::pack(QStringList fileNames, QString type, const QString& dest, long count, QMap<QString, QString> extraProps, KRarcObserver *observer)
+bool KrArcHandler::pack(QStringList fileNames, QString type, const QString& dest, long count, QMap<QString, QString> extraProps, KrArcObserver *observer)
 {
     // set the right packer to do the job
     QStringList packer;
@@ -575,7 +575,7 @@
     // tell the user to wait
     observer->subJobStarted(i18n("Packing File(s)"), count);
     if (count != 0)
-        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KRarcObserver::incrementProgress);
+        connect(&proc, &KrLinecountingProcess::newOutputLines, observer, &KrArcObserver::incrementProgress);
 
     // start the packing process
     proc.start();