diff --git a/src/corelib/text/qstringalgorithms_p.h b/src/corelib/text/qstringalgorithms_p.h
index 527707b8e75..513e2b8cbc3 100644
--- a/src/corelib/text/qstringalgorithms_p.h
+++ b/src/corelib/text/qstringalgorithms_p.h
@@ -101,7 +101,7 @@ template <typename StringType> struct QStringAlgorithms
         if (ptr != dst && ptr[-1] == QChar::Space)
             --ptr;
 
-        int newlen = ptr - dst;
+        qsizetype newlen = ptr - dst;
         if (isConst && newlen == str.size() && unmodified) {
             // nothing happened, return the original
             return str;