diff --git a/kdecore/localization/klocale_kde.cpp b/kdecore/localization/klocale_kde.cpp
index 41c3915..216dd25 100644
--- a/kdecore/localization/klocale_kde.cpp
+++ b/kdecore/localization/klocale_kde.cpp
@@ -2438,8 +2438,8 @@ QString KLocalePrivate::formatLocaleTime(const QTime &time, KLocale::TimeFormatO
 
 bool KLocalePrivate::use12Clock() const
 {
-    if ((timeFormat().contains(QString::fromLatin1("%I")) > 0) ||
-        (timeFormat().contains(QString::fromLatin1("%l")) > 0)) {
+    if ((timeFormat().contains(QString::fromLatin1("%I")) != 0) ||
+        (timeFormat().contains(QString::fromLatin1("%l")) != 0)) {
         return true;
     } else {
         return false;
diff --git a/kimgio/jp2.cpp b/kimgio/jp2.cpp
index 11e8a51..3b35221 100644
--- a/kimgio/jp2.cpp
+++ b/kimgio/jp2.cpp
@@ -109,7 +109,7 @@ static int qiodevice_read(jas_stream_obj_t *obj, char *buf, unsigned int cnt)
         return io->read(buf, cnt);
 }
 
-static int qiodevice_write(jas_stream_obj_t *obj, char *buf, unsigned int cnt)
+static int qiodevice_write(jas_stream_obj_t *obj, const char *buf, unsigned int cnt)
 {
         QIODevice *io = (QIODevice*) obj;
         return io->write(buf, cnt);
diff --git a/kio/kfile/kopenwithdialog.cpp b/kio/kfile/kopenwithdialog.cpp
index 9c1ace8..1daf4b2 100644
--- a/kio/kfile/kopenwithdialog.cpp
+++ b/kio/kfile/kopenwithdialog.cpp
@@ -713,7 +713,7 @@ void KOpenWithDialog::slotHighlighted(const QString& entryPath, const QString&)
         // ### indicate that default value was restored
         d->terminal->setChecked(d->curService->terminal());
         QString terminalOptions = d->curService->terminalOptions();
-        d->nocloseonexit->setChecked((terminalOptions.contains(QLatin1String("--noclose")) > 0));
+        d->nocloseonexit->setChecked((terminalOptions.contains(QLatin1String("--noclose")) != 0));
         d->m_terminaldirty = false; // slotTerminalToggled changed it
     }
 }
diff --git a/kio/kfile/kpropertiesdialog.cpp b/kio/kfile/kpropertiesdialog.cpp
index 6611ee7..067525c 100644
--- a/kio/kfile/kpropertiesdialog.cpp
+++ b/kio/kfile/kpropertiesdialog.cpp
@@ -3306,7 +3306,7 @@ void KDesktopPropsPlugin::slotAdvanced()
 
     if (preferredTerminal == "konsole")
     {
-        terminalCloseBool = (d->m_terminalOptionStr.contains( "--noclose" ) > 0);
+        terminalCloseBool = (d->m_terminalOptionStr.contains( "--noclose" ) != 0);
         w.terminalCloseCheck->setChecked(terminalCloseBool);
         d->m_terminalOptionStr.remove( "--noclose");
     }