diff --git a/cmake/os/WindowsCache.cmake b/cmake/os/WindowsCache.cmake
index 786289184b6..68b6f2a6ddf 100644
--- a/cmake/os/WindowsCache.cmake
+++ b/cmake/os/WindowsCache.cmake
@@ -132,7 +132,7 @@ SET(HAVE_PASE_ENVIRONMENT CACHE  INTERNAL "")
 SET(HAVE_PATHS_H CACHE  INTERNAL "")
 SET(HAVE_PCLOSE CACHE  INTERNAL "")
 SET(HAVE_PERROR 1 CACHE  INTERNAL "")
-SET(HAVE_POLL CACHE  INTERNAL "")
+SET(HAVE_POLL_H CACHE  INTERNAL "")
 SET(HAVE_POPEN CACHE  INTERNAL "")
 SET(HAVE_POLL CACHE INTERNAL "")
 SET(HAVE_PORT_CREATE CACHE  INTERNAL "")