diff --git a/coders/thumbnail.c b/coders/thumbnail.c
index 41b7e690d..b36a08493 100644
--- a/coders/thumbnail.c
+++ b/coders/thumbnail.c
@@ -186,11 +186,11 @@ static MagickBooleanType WriteTHUMBNAILImage(const ImageInfo *image_info,
   profile=GetImageProfile(image,"exif");
   if (profile == (const StringInfo *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
-  property=GetImageProperty(image,"exif:JPEGInterchangeFormat");
+  property=GetImageProperty(image,"exif:thumbnail:JPEGInterchangeFormat");
   if (property == (const char *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
   offset=(ssize_t) StringToLong(property);
-  property=GetImageProperty(image,"exif:JPEGInterchangeFormatLength");
+  property=GetImageProperty(image,"exif:thumbnail:JPEGInterchangeFormatLength");
   if (property == (const char *) NULL)
     ThrowWriterException(CoderError,"ImageDoesNotHaveAThumbnail");
   length=(size_t) StringToLong(property);