diff --git a/src/gui/text/coretext/qfontengine_coretext_p.h b/src/gui/text/coretext/qfontengine_coretext_p.h
index 1b8a7e0d2a3..726abd61d56 100644
--- a/src/gui/text/coretext/qfontengine_coretext_p.h
+++ b/src/gui/text/coretext/qfontengine_coretext_p.h
@@ -54,7 +54,7 @@ public:
     bool canRender(const QChar *string, int len) const override;
 
     int synthesized() const override { return synthesisFlags; }
-    bool supportsHorizontalSubPixelPositions() const override { return true; }
+    bool supportsHorizontalSubPixelPositions() const override { return !isColorFont(); }
     bool supportsVerticalSubPixelPositions() const override { return false; }
 
     QFixed lineThickness() const override;
diff --git a/src/gui/text/freetype/qfontengine_ft_p.h b/src/gui/text/freetype/qfontengine_ft_p.h
index d2fa82b81df..924131699a0 100644
--- a/src/gui/text/freetype/qfontengine_ft_p.h
+++ b/src/gui/text/freetype/qfontengine_ft_p.h
@@ -158,8 +158,9 @@ private:
     QFixed emSquareSize() const override;
     bool supportsHorizontalSubPixelPositions() const override
     {
-        return default_hint_style == HintLight ||
-               default_hint_style == HintNone;
+        return !isColorFont()
+                && (default_hint_style == HintLight ||
+                    default_hint_style == HintNone);
     }
 
     bool supportsVerticalSubPixelPositions() const override
diff --git a/src/gui/text/windows/qwindowsfontenginedirectwrite.cpp b/src/gui/text/windows/qwindowsfontenginedirectwrite.cpp
index 3ab6fe723d7..049a3e5885f 100644
--- a/src/gui/text/windows/qwindowsfontenginedirectwrite.cpp
+++ b/src/gui/text/windows/qwindowsfontenginedirectwrite.cpp
@@ -749,7 +749,8 @@ QImage QWindowsFontEngineDirectWrite::alphaMapForGlyph(glyph_t glyph,
 bool QWindowsFontEngineDirectWrite::supportsHorizontalSubPixelPositions() const
 {
     DWRITE_RENDERING_MODE renderMode = hintingPreferenceToRenderingMode(fontDef);
-    return  (renderMode != DWRITE_RENDERING_MODE_GDI_CLASSIC
+    return  (!isColorFont()
+            && renderMode != DWRITE_RENDERING_MODE_GDI_CLASSIC
             && renderMode != DWRITE_RENDERING_MODE_GDI_NATURAL
             && renderMode != DWRITE_RENDERING_MODE_ALIASED);
 }