register storage class is deprecated
diff --git a/coders/debug.c b/coders/debug.c
index b8ed094..32cfa9f 100644
--- a/coders/debug.c
+++ b/coders/debug.c
@@ -181,10 +181,10 @@
   PixelInfo
     pixel;
 
-  register const Quantum
+  const Quantum
     *p;
 
-  register ssize_t
+  ssize_t
     x;
 
   size_t