diff --git a/MagickCore/accelerate.c b/MagickCore/accelerate.c
index 93f718d..eab0b31 100644
--- a/MagickCore/accelerate.c
+++ b/MagickCore/accelerate.c
@@ -295,7 +295,7 @@
     "      break;\n"
     "    }\n"
     "  }\n"
-    "  gamma=ClampReciprocal(gamma);\n"
+    "  gamma=MagickReciprocal(gamma);\n"
     "  const unsigned long index = y*columns+x;\n"
     "  output[index].x=ClampToQuantum(gamma*sum.x);\n"
     "  output[index].y=ClampToQuantum(gamma*sum.y);\n"