diff --git a/src/lib/Config.h.in b/src/lib/Config.h.in
index 18dafad22..8a554e5d9 100644
--- a/src/lib/Config.h.in
+++ b/src/lib/Config.h.in
@@ -13,9 +13,6 @@
 /* Define if you have a POSIX `sigwait` function. */
 #cmakedefine HAVE_POSIX_SIGWAIT @HAVE_POSIX_SIGWAIT@
 
-/* Define if you have POSIX threads libraries and header files. */
-#cmakedefine HAVE_PTHREAD @HAVE_PTHREAD@
-
 /* Define to 1 if you have the <sys/socket.h> header file. */
 #cmakedefine HAVE_SYS_SOCKET_H @HAVE_SYS_SOCKET_H@
 
diff --git a/src/lib/arch/Arch.h b/src/lib/arch/Arch.h
index cb09a65f1..865ecfbcd 100644
--- a/src/lib/arch/Arch.h
+++ b/src/lib/arch/Arch.h
@@ -38,11 +38,8 @@
 
 #include "arch/unix/ArchDaemonUnix.h"
 #include "arch/unix/ArchLogUnix.h"
-#include "arch/unix/ArchNetworkBSD.h"
-
-#if HAVE_PTHREAD
 #include "arch/unix/ArchMultithreadPosix.h"
-#endif
+#include "arch/unix/ArchNetworkBSD.h"
 
 #endif