diff --git a/src/gui/painting/qcosmeticstroker.cpp b/src/gui/painting/qcosmeticstroker.cpp
index 24d625e933..3ee262fcf1 100644
--- a/src/gui/painting/qcosmeticstroker.cpp
+++ b/src/gui/painting/qcosmeticstroker.cpp
@@ -150,28 +150,28 @@ static StrokeLine strokeLine(int strokeSelection)
 
     switch (strokeSelection) {
     case Aliased|Solid|RegularDraw:
-        stroke = &::drawLine<drawPixel, NoDasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLine)<drawPixel, NoDasher>;
         break;
     case Aliased|Solid|FastDraw:
-        stroke = &::drawLine<drawPixelARGB32Opaque, NoDasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLine)<drawPixelARGB32Opaque, NoDasher>;
         break;
     case Aliased|Dashed|RegularDraw:
-        stroke = &::drawLine<drawPixel, Dasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLine)<drawPixel, Dasher>;
         break;
     case Aliased|Dashed|FastDraw:
-        stroke = &::drawLine<drawPixelARGB32Opaque, Dasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLine)<drawPixelARGB32Opaque, Dasher>;
         break;
     case AntiAliased|Solid|RegularDraw:
-        stroke = &drawLineAA<drawPixel, NoDasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLineAA)<drawPixel, NoDasher>;
         break;
     case AntiAliased|Solid|FastDraw:
-        stroke = &drawLineAA<drawPixelARGB32, NoDasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLineAA)<drawPixelARGB32, NoDasher>;
         break;
     case AntiAliased|Dashed|RegularDraw:
-        stroke = &drawLineAA<drawPixel, Dasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLineAA)<drawPixel, Dasher>;
         break;
     case AntiAliased|Dashed|FastDraw:
-        stroke = &drawLineAA<drawPixelARGB32, Dasher>;
+        stroke = &QT_PREPEND_NAMESPACE(drawLineAA)<drawPixelARGB32, Dasher>;
         break;
     default:
         Q_ASSERT(false);