diff --git a/cmake/Libraries.cmake b/cmake/Libraries.cmake
index b8c565d77..555b7b1cb 100644
--- a/cmake/Libraries.cmake
+++ b/cmake/Libraries.cmake
@@ -94,7 +94,6 @@ macro(configure_unix_libs)
   check_include_files(sys/time.h HAVE_SYS_TIME_H)
   check_include_files(unistd.h HAVE_UNISTD_H)
 
-  check_function_exists(getpwuid_r HAVE_GETPWUID_R)
   check_function_exists(gmtime_r HAVE_GMTIME_R)
   check_function_exists(nanosleep HAVE_NANOSLEEP)
   check_function_exists(sigwait HAVE_POSIX_SIGWAIT)
diff --git a/src/lib/Config.h.in b/src/lib/Config.h.in
index c3e4c2b1e..c222072cf 100644
--- a/src/lib/Config.h.in
+++ b/src/lib/Config.h.in
@@ -10,9 +10,6 @@
 /* Define if the <X11/extensions/dpms.h> header file declares function prototypes. */
 #cmakedefine HAVE_DPMS_PROTOTYPES @HAVE_DPMS_PROTOTYPES@
 
-/* Define if you have a working `getpwuid_r` function. */
-#cmakedefine HAVE_GETPWUID_R @HAVE_GETPWUID_R@
-
 /* Define to 1 if you have the `gmtime_r` function. */
 #cmakedefine HAVE_GMTIME_R @HAVE_GMTIME_R@