diff --git a/Utilities/cmcurl/CMake/Platforms/WindowsCache.cmake b/Utilities/cmcurl/CMake/Platforms/WindowsCache.cmake
index 3533a5413..0e26a173f 100644
--- a/Utilities/cmcurl/CMake/Platforms/WindowsCache.cmake
+++ b/Utilities/cmcurl/CMake/Platforms/WindowsCache.cmake
@@ -50,9 +50,6 @@ if(NOT UNIX)
     set(HAVE_X509_H 0)
     set(HAVE_ZLIB_H 0)
 
-    set(HAVE_SIZEOF_LONG_DOUBLE 1)
-    set(SIZEOF_LONG_DOUBLE 8)
-
     set(HAVE_SOCKET 1)
     set(HAVE_POLL 0)
     set(HAVE_SELECT 1)
diff --git a/Utilities/cmcurl/CMakeLists.txt b/Utilities/cmcurl/CMakeLists.txt
index 845c330fe..0cd4f3a78 100644
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
@@ -512,7 +512,6 @@ check_type_size("long"  SIZEOF_LONG)
 check_type_size("short"  SIZEOF_SHORT)
 check_type_size("int"  SIZEOF_INT)
 check_type_size("__int64"  SIZEOF___INT64)
-check_type_size("long double"  SIZEOF_LONG_DOUBLE)
 check_type_size("time_t"  SIZEOF_TIME_T)
 if(NOT HAVE_SIZEOF_SSIZE_T)
   if(SIZEOF_LONG EQUAL SIZEOF_SIZE_T)
diff --git a/Utilities/cmcurl/lib/mprintf.c b/Utilities/cmcurl/lib/mprintf.c
index 23070a764..7412dc38b 100644
--- a/Utilities/cmcurl/lib/mprintf.c
+++ b/Utilities/cmcurl/lib/mprintf.c
@@ -47,10 +47,6 @@
 /* The last #include file should be: */
 #include "memdebug.h"
 
-#ifndef SIZEOF_LONG_DOUBLE
-#define SIZEOF_LONG_DOUBLE 0
-#endif
-
 /*
  * If SIZEOF_SIZE_T has not been defined, default to the size of long.
  */