diff --git a/ChangeLog.md b/ChangeLog.md
index 3cefc6b5..80f883c6 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -164,11 +164,11 @@ dropped into a subsampled input image or vice versa.
 converters that occurred when attempting to decompress more than one scanline
 at a time from a vertically subsampled JPEG image.  These issues caused a
 buffer overrun and subsequent segfault if the output image rows were not 4-byte
-aligned and both the vertical sampling factor and the number of scanlines
-decompressed at a time were greater than 2.  In other cases, the issues caused
-incorrect dithered output.  The issues could not be reproduced using djpeg
-(which decompresses one scanline at a time) and were not known to exist in any
-other applications.
+aligned, the image width was 1, and both the vertical sampling factor and the
+number of scanlines decompressed at a time were greater than 2.  In other
+cases, the issues caused incorrect dithered output.  The issues could not be
+reproduced using djpeg (which decompresses one scanline at a time) and were not
+known to exist in any other applications.
 
 
 3.0.4