diff --git a/src/corelib/io/qsettings_wasm.cpp b/src/corelib/io/qsettings_wasm.cpp
index da51fe6836..96b0033d95 100644
--- a/src/corelib/io/qsettings_wasm.cpp
+++ b/src/corelib/io/qsettings_wasm.cpp
@@ -427,7 +427,7 @@ QSettingsPrivate *QSettingsPrivate::create(QSettings::Format format, QSettings::
     case QSettings::Format::InvalidFormat:
         return nullptr;
     case QSettings::Format::NativeFormat:
-        /* NOTREACHED */ assert(0);
+        Q_UNREACHABLE();
         break;
     }
 }