diff --git a/support/timespec-add.c b/support/timespec-add.c
index 55fd812f31..57b968c316 100644
--- a/support/timespec-add.c
+++ b/support/timespec-add.c
@@ -20,7 +20,6 @@
 /* Return the sum of two timespec values A and B.  On overflow, return
    an extremal value.  This assumes 0 <= tv_nsec < TIMESPEC_HZ.  */
 
-#include <config.h>
 #include "timespec.h"
 
 #include "intprops.h"
diff --git a/support/timespec-sub.c b/support/timespec-sub.c
index 7d89c1415a..2897343fce 100644
--- a/support/timespec-sub.c
+++ b/support/timespec-sub.c
@@ -21,7 +21,6 @@
    overflow, return an extremal value.  This assumes 0 <= tv_nsec <
    TIMESPEC_HZ.  */
 
-#include <config.h>
 #include "timespec.h"
 
 #include "intprops.h"