Index: ImageMagick-7.1.1-43/coders/miff.c
===================================================================
--- ImageMagick-7.1.1-43.orig/coders/miff.c
+++ ImageMagick-7.1.1-43/coders/miff.c
@@ -1335,6 +1335,7 @@ static Image *ReadMIFFImage(const ImageI
     if (quantum_format != UndefinedQuantumFormat)
       {
         status=SetQuantumFormat(image,quantum_info,quantum_format);
+        image->depth=quantum_info->depth;
         if (status == MagickFalse)
           ThrowMIFFException(ResourceLimitError,"MemoryAllocationFailed");
       }