diff --git a/CMake/win32-cache.cmake b/CMake/win32-cache.cmake
index e704d2195b..3ddbfce7d3 100644
--- a/CMake/win32-cache.cmake
+++ b/CMake/win32-cache.cmake
@@ -185,7 +185,6 @@ set(HAVE_SIZEOF_SUSECONDS_T 0)
 if(MINGW OR MSVC)
   curl_prefill_type_size("INT" 4)
   curl_prefill_type_size("LONG" 4)
-  curl_prefill_type_size("LONG_LONG" 8)
   curl_prefill_type_size("__INT64" 8)
   curl_prefill_type_size("CURL_OFF_T" 8)
   curl_prefill_type_size("CURL_SOCKET_T" ${CMAKE_SIZEOF_VOID_P})