diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index d5224cd2b..5a1ef56af 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,9 @@
+2012-06-26  Christopher Faylor  <me.newlib2012@cgf.cx>
+
+	* libc/include/sys/types.h: Don't use the same preprocessor guard for
+	time_t, timespec, and itimerspec.  Add a separate guard specifically
+	for timespec and always unconditionally define itimerspec.
+
 2012-06-05  Corinna Vinschen  <vinschen@redhat.com>
 
 	* libc/stdio/findfp.c (__sinit): Avoid infinite recursion on
diff --git a/newlib/libc/include/sys/types.h b/newlib/libc/include/sys/types.h
index 9723d92d3..73e4ed878 100644
--- a/newlib/libc/include/sys/types.h
+++ b/newlib/libc/include/sys/types.h
@@ -109,19 +109,22 @@ typedef _CLOCK_T_ clock_t;
 #ifndef __time_t_defined
 typedef _TIME_T_ time_t;
 #define __time_t_defined
+#endif
 
+#ifndef __timespec_defined
+#define __timespec_defined
 /* Time Value Specification Structures, P1003.1b-1993, p. 261 */
 
 struct timespec {
   time_t  tv_sec;   /* Seconds */
   long    tv_nsec;  /* Nanoseconds */
 };
+#endif
 
 struct itimerspec {
   struct timespec  it_interval;  /* Timer period */
   struct timespec  it_value;     /* Timer expiration */
 };
-#endif
 
 typedef	long	daddr_t;
 typedef	char *	caddr_t;