diff --git a/kio/kio/slavebase.cpp b/kio/kio/slavebase.cpp
index 989d3262..45506cc2 100644
--- a/kio/kio/slavebase.cpp
+++ b/kio/kio/slavebase.cpp
@@ -674,11 +674,11 @@ int SlaveBase::messageBox(MessageBoxType type, const QString &text, const QStrin
                           const QString &dontAskAgainName)
 {
     kDebug(7019) << "messageBox " << type << " " << text << " - " << caption << buttonYes << buttonNo;
-    KIO_DATA << (qint32)type << text << caption << buttonYes << buttonNo << dontAskAgainName;
+    KIO_DATA << (qint8)type << text << caption << buttonYes << buttonNo << dontAskAgainName;
     send(SI_MESSAGEBOX, data);
     if (waitForAnswer(CMD_MESSAGEBOXANSWER, 0, data) != -1) {
         QDataStream stream(data);
-        int answer;
+        int answer = 0;
         stream >> answer;
         kDebug(7019) << "got messagebox answer" << answer;
         return answer;
@@ -881,7 +881,7 @@ void SlaveBase::dispatch(int command, const QByteArray &data)
         }
         case CMD_DEL: {
             KUrl url;
-            qint8 isFile;
+            qint8 isFile = 0;
             stream >> url >> isFile;
             d->m_state = SlaveBasePrivate::InsideMethod;
             del(url, isFile != 0);
@@ -891,10 +891,10 @@ void SlaveBase::dispatch(int command, const QByteArray &data)
         }
         case CMD_CHMOD: {
             KUrl url;
-            int i = 0;
-            stream >> url >> i;
+            int permissions = 0;
+            stream >> url >> permissions;
             d->m_state = SlaveBasePrivate::InsideMethod;
-            chmod(url, i);
+            chmod(url, permissions);
             d->verifyState("chmod()");
             d->m_state = SlaveBasePrivate::Idle;
             break;
diff --git a/kio/kio/slaveinterface.cpp b/kio/kio/slaveinterface.cpp
index 04877d0a..0bf6d2ba 100644
--- a/kio/kio/slaveinterface.cpp
+++ b/kio/kio/slaveinterface.cpp
@@ -348,7 +348,7 @@ bool SlaveInterface::dispatch(int cmd, const QByteArray &rawdata)
             kDebug(7007) << "needs a msg box";
             QDataStream stream(rawdata);
             QString text, caption, buttonYes, buttonNo, dontAskAgainName;
-            qint32 type = 0;
+            qint8 type = 0;
             stream >> type >> text >> caption >> buttonYes >> buttonNo >> dontAskAgainName;
             messageBox(type, text, caption, buttonYes, buttonNo, dontAskAgainName);
             break;