diff --git a/ChangeLog b/ChangeLog
index 60df0b2..7abf073 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2019-05-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* config.guess: Remove space after "#endif", as Gnulib and some
+	other downstream projects frown on trailing white space.
+
 2019-04-28  Urs Janßen  <urs@tin.org>
 
 	* config.guess: Use utsname version instead of preprocessor macros
diff --git a/config.guess b/config.guess
index 6f9f2bd..4cd9454 100755
--- a/config.guess
+++ b/config.guess
@@ -1580,7 +1580,7 @@ main ()
   printf ("mips-dec-ultrix%s\n", un.release); exit (0);
 #else
   printf ("mips-dec-ultrix\n"); exit (0);
-#endif  
+#endif
 #endif
 #endif