diff --git a/src/Gui/BitmapFactory.cpp b/src/Gui/BitmapFactory.cpp
index 3878b6727601..3fbfbf84a354 100644
--- a/src/Gui/BitmapFactory.cpp
+++ b/src/Gui/BitmapFactory.cpp
@@ -693,6 +693,8 @@ void BitmapFactoryInst::convert(const SoSFImage& p, QImage& img) const
     int numcomponents;
 
     const unsigned char * bytes = p.getValue(size, numcomponents);
+    if (!bytes)
+        return;
 
     int width  = (int)size[0];
     int height = (int)size[1];