diff --git a/coders/hdr.c b/coders/hdr.c
index 0874622..8aa9ee0 100644
--- a/coders/hdr.c
+++ b/coders/hdr.c
@@ -687,7 +687,7 @@
   if (status == MagickFalse)
     return(status);
   if (IsRGBColorspace(image->colorspace) == MagickFalse)
-    (void) TransformImageColorspace(image,RGBColorspace,exception);
+    (void) TransformImageColorspace(image,sRGBColorspace,exception);
   /*
     Write header.
   */