diff --git a/MagickCore/mac.c b/MagickCore/mac.c
index 0e5ee36..9dbea86 100644
--- a/MagickCore/mac.c
+++ b/MagickCore/mac.c
@@ -1299,8 +1299,8 @@
       break;
     }
   }
-  image->x_resolution=(picture_info.hRes) >> 16;
-  image->y_resolution=(picture_info.vRes) >> 16;
+  image->resolution.x=(picture_info.hRes) >> 16;
+  image->resolution.y=(picture_info.vRes) >> 16;
   image->units=PixelsPerInchResolution;
   image->columns=picture_info.sourceRect.right-picture_info.sourceRect.left;
   image->rows=picture_info.sourceRect.bottom-picture_info.sourceRect.top;