diff --git a/MagickCore/distribute-cache.c b/MagickCore/distribute-cache.c
index 2f9cd70d8d..a9419c163f 100644
--- a/MagickCore/distribute-cache.c
+++ b/MagickCore/distribute-cache.c
@@ -465,7 +465,7 @@ MagickPrivate DistributeCacheInfo *DestroyDistributeCacheInfo(
 */
 
 #if !defined(MAGICKCORE_HAVE_DISTRIBUTE_CACHE)
-static inline MagickOffsetType dpc_send(SOCKET magick_unused(file),
+static inline MagickOffsetType dpc_send(SOCKET_TYPE magick_unused(file),
   const MagickSizeType magick_unused(length),
   const void *magick_restrict magick_unused(message))
 {