diff --git a/autotests/write/format/exr/Format_ARGB32_Premultiplied.exr b/autotests/write/format/exr/Format_ARGB32_Premultiplied.exr
index 9a40410..a7c1052 100644
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diff --git a/autotests/write/format/exr/Format_ARGB6666_Premultiplied.exr b/autotests/write/format/exr/Format_ARGB6666_Premultiplied.exr
index 84b22af..f480e31 100644
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diff --git a/autotests/write/format/exr/Format_ARGB8555_Premultiplied.exr b/autotests/write/format/exr/Format_ARGB8555_Premultiplied.exr
index 9f53510..97de062 100644
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diff --git a/autotests/write/format/exr/Format_ARGB8565_Premultiplied.exr b/autotests/write/format/exr/Format_ARGB8565_Premultiplied.exr
index 9f6fddb..8d6a3d7 100644
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diff --git a/autotests/write/format/exr/Format_RGBA8888_Premultiplied.exr b/autotests/write/format/exr/Format_RGBA8888_Premultiplied.exr
index 2f1b2fd..4ed6669 100644
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diff --git a/src/imageformats/exr.cpp b/src/imageformats/exr.cpp
index d74351f..4be5751 100644
--- a/src/imageformats/exr.cpp
+++ b/src/imageformats/exr.cpp
@@ -608,13 +608,13 @@ bool EXRHandler::write(const QImage &image)
         pixels.resizeErase(EXR_LINES_PER_BLOCK, width);
 
         // convert the image and write into the stream
-        auto convFormat = image.hasAlphaChannel() ? QImage::Format_RGBA16FPx4 : QImage::Format_RGBX16FPx4;
+        auto convFormat = image.hasAlphaChannel() ? QImage::Format_RGBA32FPx4 : QImage::Format_RGBX32FPx4;
         ScanLineConverter slc(convFormat);
         slc.setDefaultSourceColorSpace(QColorSpace(QColorSpace::SRgb));
         slc.setTargetColorSpace(QColorSpace(QColorSpace::SRgbLinear));
         for (int y = 0, n = 0; y < height; y += n) {
             for (n = 0; n < std::min(EXR_LINES_PER_BLOCK, height - y); ++n) {
-                auto scanLine = reinterpret_cast<const qfloat16 *>(slc.convertedScanLine(image, y + n));
+                auto scanLine = reinterpret_cast<const float *>(slc.convertedScanLine(image, y + n));
                 if (scanLine == nullptr) {
                     return false;
                 }