diff --git a/cmake/config.h.in b/cmake/config.h.in
index 63e0afc2..9c8f8a27 100644
--- a/cmake/config.h.in
+++ b/cmake/config.h.in
@@ -39,10 +39,6 @@
 /* C compiler has intrin.h */
 #cmakedefine HAVE_C_INTRIN_H
 
-/* Define to 1 if you have the declaration of `pthread_barrier_init', and to 0
-   if you don't. */
-#cmakedefine HAVE_DECL_PTHREAD_BARRIER_INIT
-
 /* Define to 1 if you have the declaration of `pthread_setaffinity_np', and to
    0 if you don't. */
 #cmakedefine HAVE_DECL_PTHREAD_SETAFFINITY_NP