diff --git a/coders/dpx.c b/coders/dpx.c
index 135d2ac..71bde9a 100644
--- a/coders/dpx.c
+++ b/coders/dpx.c
@@ -41,6 +41,7 @@
 */
 #include "MagickCore/studio.h"
 #include "MagickCore/attribute.h"
+#include "MagickCore/artifact.h"
 #include "MagickCore/blob.h"
 #include "MagickCore/blob-private.h"
 #include "MagickCore/cache.h"