diff --git a/coders/hdr.c b/coders/hdr.c
index 8aa9ee0..dec8167 100644
--- a/coders/hdr.c
+++ b/coders/hdr.c
@@ -686,7 +686,7 @@
   status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
   if (status == MagickFalse)
     return(status);
-  if (IsRGBColorspace(image->colorspace) == MagickFalse)
+  if (IssRGBColorspace(image->colorspace) == MagickFalse)
     (void) TransformImageColorspace(image,sRGBColorspace,exception);
   /*
     Write header.