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-rw-r--r--src/gui/image/qpixmapfilter.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gui/image/qpixmapfilter.cpp b/src/gui/image/qpixmapfilter.cpp
index 7cf942c9aa..2792e458e0 100644
--- a/src/gui/image/qpixmapfilter.cpp
+++ b/src/gui/image/qpixmapfilter.cpp
@@ -713,7 +713,8 @@ void expblur(QImage &img, qreal radius, bool improvedQuality = false, int transp
radius *= qreal(0.5);
Q_ASSERT(img.format() == QImage::Format_ARGB32_Premultiplied
- || img.format() == QImage::Format_RGB32);
+ || img.format() == QImage::Format_RGB32
+ || img.format() == QImage::Format_Indexed8);
// choose the alpha such that pixels at radius distance from a fully
// saturated pixel will have an alpha component of no greater than