diff --git a/cmake/Libraries.cmake b/cmake/Libraries.cmake
index f63edc238..746e51b37 100644
--- a/cmake/Libraries.cmake
+++ b/cmake/Libraries.cmake
@@ -138,7 +138,6 @@ macro(configure_unix_libs)
   check_function_exists(gmtime_r HAVE_GMTIME_R)
   check_function_exists(nanosleep HAVE_NANOSLEEP)
   check_function_exists(sigwait HAVE_POSIX_SIGWAIT)
-  check_function_exists(strftime HAVE_STRFTIME)
   check_function_exists(vsnprintf HAVE_VSNPRINTF)
   check_function_exists(inet_aton HAVE_INET_ATON)
 
diff --git a/src/lib/config.h.in b/src/lib/config.h.in
index 5c37ad085..fd95d49dc 100644
--- a/src/lib/config.h.in
+++ b/src/lib/config.h.in
@@ -56,9 +56,6 @@
 /* Define to 1 if you have the <sstream> header file. */
 #cmakedefine HAVE_SSTREAM @HAVE_SSTREAM@
 
-/* Define to 1 if you have the `strftime` function. */
-#cmakedefine HAVE_STRFTIME @HAVE_STRFTIME@
-
 /* Define to 1 if you have the <strings.h> header file. */
 #cmakedefine HAVE_STRINGS_H @HAVE_STRINGS_H@