diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6bd188c9..403804f6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -350,7 +350,7 @@ CHECK_FUNCTION_EXISTS_EX(usleep EVENT__HAVE_USLEEP)
 CHECK_FUNCTION_EXISTS_EX(timeradd EVENT__HAVE_TIMERADD)
 CHECK_FUNCTION_EXISTS_EX(timerclear EVENT__HAVE_TIMERCLEAR)
 CHECK_FUNCTION_EXISTS_EX(timercmp EVENT__HAVE_TIMERCMP)
-CHECK_FUNCTION_EXISTS_EX(timerfd_create HAVE_TIMERFD_CREATE)
+CHECK_FUNCTION_EXISTS_EX(timerfd_create EVENT__HAVE_TIMERFD_CREATE)
 CHECK_FUNCTION_EXISTS_EX(timerisset EVENT__HAVE_TIMERISSET)
 CHECK_FUNCTION_EXISTS_EX(putenv EVENT__HAVE_PUTENV)
 CHECK_FUNCTION_EXISTS_EX(setenv EVENT__HAVE_SETENV)