diff --git a/ChangeLog b/ChangeLog
index 7cd5cb0df8..9468ce4a61 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2012-05-22  Paul Eggert  <eggert@cs.ucla.edu>
 
+	* time/mktime.c (compile-command): Add "-I.".
+
 	mktime: merge mktime-internal.h change from gnulib
 	* time/mktime.c [!_LIBC]: Include "mktime-internal.h".
 
diff --git a/time/mktime.c b/time/mktime.c
index 5a4f74203d..556787684f 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -662,6 +662,6 @@ main (int argc, char **argv)
 
 /*
 Local Variables:
-compile-command: "gcc -DDEBUG -Wall -W -O -g mktime.c -o mktime"
+compile-command: "gcc -DDEBUG -I. -Wall -W -O2 -g mktime.c -o mktime"
 End:
 */