diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp
index d510e28c6f..0d175adaa8 100644
--- a/src/gui/painting/qpdf.cpp
+++ b/src/gui/painting/qpdf.cpp
@@ -784,7 +784,7 @@ QPdfPage::QPdfPage()
 {
 }
 
-void QPdfPage::streamImage(int w, int h, int object)
+void QPdfPage::streamImage(int w, int h, uint object)
 {
     *this << w << "0 0 " << -h << "0 " << h << "cm /Im" << object << " Do\n";
     if (!images.contains(object))
@@ -2714,7 +2714,7 @@ int QPdfEnginePrivate::addConstantAlphaObject(int brushAlpha, int penAlpha)
 {
     if (brushAlpha == 255 && penAlpha == 255)
         return 0;
-    int object = alphaCache.value(QPair<uint, uint>(brushAlpha, penAlpha), 0);
+    uint object = alphaCache.value(QPair<uint, uint>(brushAlpha, penAlpha), 0);
     if (!object) {
         object = addXrefEntry(-1);
         QByteArray alphaDef;
diff --git a/src/gui/painting/qpdf_p.h b/src/gui/painting/qpdf_p.h
index e775406e65..67b189a4db 100644
--- a/src/gui/painting/qpdf_p.h
+++ b/src/gui/painting/qpdf_p.h
@@ -86,6 +86,7 @@ namespace QPdf {
         ByteStream &operator <<(const ByteStream &src);
         ByteStream &operator <<(qreal val);
         ByteStream &operator <<(int val);
+        ByteStream &operator <<(uint val) { return (*this << int(val)); }
         ByteStream &operator <<(qint64 val) { return (*this << int(val)); }
         ByteStream &operator <<(const QPointF &p);
         // Note that the stream may be invalidated by calls that insert data.
@@ -154,7 +155,7 @@ public:
     QList<uint> fonts;
     QList<uint> annotations;
 
-    void streamImage(int w, int h, int object);
+    void streamImage(int w, int h, uint object);
 
     QSize pageSize;
 private:
diff --git a/src/gui/text/qfontsubset.cpp b/src/gui/text/qfontsubset.cpp
index 9f1b19e4da..f0b64e114b 100644
--- a/src/gui/text/qfontsubset.cpp
+++ b/src/gui/text/qfontsubset.cpp
@@ -201,7 +201,7 @@ QList<int> QFontSubset::getReverseMap() const
 {
     QList<int> reverseMap(0x10000, 0);
     for (uint uc = 0; uc < 0x10000; ++uc) {
-        int idx = glyph_indices.indexOf(fontEngine->glyphIndex(uc));
+        auto idx = glyph_indices.indexOf(fontEngine->glyphIndex(uc));
         if (idx >= 0 && !reverseMap.at(idx))
             reverseMap[idx] = uc;
     }
@@ -300,14 +300,14 @@ QByteArray QFontSubset::createToUnicodeMap() const
     return touc;
 }
 
-int QFontSubset::addGlyph(int index)
+int QFontSubset::addGlyph(uint index)
 {
-    int idx = glyph_indices.indexOf(index);
+    qsizetype idx = glyph_indices.indexOf(index);
     if (idx < 0) {
         idx = glyph_indices.size();
         glyph_indices.append(index);
     }
-    return idx;
+    return (int)idx;
 }
 
 #endif // QT_NO_PDF
diff --git a/src/gui/text/qfontsubset_p.h b/src/gui/text/qfontsubset_p.h
index 1a3b392601..c8ff94da78 100644
--- a/src/gui/text/qfontsubset_p.h
+++ b/src/gui/text/qfontsubset_p.h
@@ -59,7 +59,7 @@ QT_BEGIN_NAMESPACE
 class QFontSubset
 {
 public:
-    explicit QFontSubset(QFontEngine *fe, int obj_id = 0)
+    explicit QFontSubset(QFontEngine *fe, uint obj_id = 0)
         : object_id(obj_id), noEmbed(false), fontEngine(fe), downloaded_glyphs(0), standard_font(false)
     {
         fontEngine->ref.ref();
@@ -81,12 +81,12 @@ public:
 
     static QByteArray glyphName(unsigned short unicode, bool symbol);
 
-    int addGlyph(int index);
+    int addGlyph(uint index);
 #endif
-    const int object_id;
+    const uint object_id;
     bool noEmbed;
     QFontEngine *fontEngine;
-    QList<int> glyph_indices;
+    QList<uint> glyph_indices;
     mutable int downloaded_glyphs;
     mutable bool standard_font;
     int nGlyphs() const { return glyph_indices.size(); }