diff --git a/coders/uyvy.c b/coders/uyvy.c
index 5b46dd4..03724ec 100644
--- a/coders/uyvy.c
+++ b/coders/uyvy.c
@@ -151,7 +151,7 @@
   for (y=0; y < (ssize_t) image->rows; y++)
   {
     q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
-    if (q == (const Quantum *) NULL)
+    if (q == (Quantum *) NULL)
       break;
     for (x=0; x < (ssize_t) (image->columns >> 1); x++)
     {