1 files changed, 2 insertions, 2 deletions

diff --git a/coders/dot.c b/coders/dot.c
index d3aa8ea17..3f242aa87 100644
--- a/coders/dot.c
+++ b/coders/dot.c
@@ -119,12 +119,12 @@ static Image *ReadDOTImage(const ImageInfo *image_info,ExceptionInfo *exception)
     Open image file.
   */
   assert(image_info != (const ImageInfo *) NULL);
-  assert(image_info->signature == MagickSignature);
+  assert(image_info->signature == MagickCoreSignature);
   if (image_info->debug != MagickFalse)
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
       image_info->filename);
   assert(exception != (ExceptionInfo *) NULL);
-  assert(exception->signature == MagickSignature);
+  assert(exception->signature == MagickCoreSignature);
   image=AcquireImage(image_info,exception);
   status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
   if (status == MagickFalse)