diff --git a/autotest/gcore/data/vrt/pixfun_mod_r.vrt b/autotest/gcore/data/vrt/pixfun_mod_r.vrt
index 62553e6504ec..9c94842edb83 100644
--- a/autotest/gcore/data/vrt/pixfun_mod_r.vrt
+++ b/autotest/gcore/data/vrt/pixfun_mod_r.vrt
@@ -1,5 +1,5 @@
 <VRTDataset rasterXSize="20" rasterYSize="20">
-  <VRTRasterBand dataType="uint32" band="1" subClass="VRTDerivedRasterBand">
+  <VRTRasterBand dataType="UInt32" band="1" subClass="VRTDerivedRasterBand">
     <Description>Magnitude</Description>
     <PixelFunctionType>mod</PixelFunctionType>
     <SourceTransferType>Int32</SourceTransferType>