--- magick/random.c
+++ magick/random.c
@@ -545,7 +545,7 @@ MagickExport double GetPseudoRandomValue
 
   if (random_seed[0] == ~0UL)
     SeedPseudoRandomGenerator(~0UL);
-  range=(~0U);
+  range=~0UL;
   do
   {
     alpha=(unsigned long) (random_seed[1] ^ (random_seed[1] << 11));