diff --git a/src/klocalizedstring.cpp b/src/klocalizedstring.cpp
--- a/src/klocalizedstring.cpp
+++ b/src/klocalizedstring.cpp
@@ -1138,7 +1138,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(std::abs(a));
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<intn>(a));
     return kls;
 }
@@ -1148,7 +1148,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(a);
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<uintn>(a));
     return kls;
 }
@@ -1158,7 +1158,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(std::abs(a));
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<intn>(a));
     return kls;
 }
@@ -1168,7 +1168,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(a);
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<uintn>(a));
     return kls;
 }
@@ -1178,7 +1178,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(qAbs(a));
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<intn>(a));
     return kls;
 }
@@ -1188,7 +1188,7 @@
 {
     KLocalizedString kls(*this);
     kls.d->checkNumber(a);
-    kls.d->arguments.append(QStringLiteral("%1").arg(a, fieldWidth, base, fillChar));
+    kls.d->arguments.append(QStringLiteral("%L1").arg(a, fieldWidth, base, fillChar));
     kls.d->values.append(static_cast<uintn>(a));
     return kls;
 }