diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index 07e83864dab..2fd4e8a3e63 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-25  Ian Lance Taylor  <iant@google.com>
+
+	* alloc.c: #include <sys/types.h>.
+	* mmap.c: Likewise.
+
 2013-01-31  Ian Lance Taylor  <iant@google.com>
 
 	* dwarf.c (read_function_info): Permit fvec parameter to be NULL.
diff --git a/libbacktrace/alloc.c b/libbacktrace/alloc.c
index cb6f07b8ee9..d0796737786 100644
--- a/libbacktrace/alloc.c
+++ b/libbacktrace/alloc.c
@@ -34,6 +34,7 @@ POSSIBILITY OF SUCH DAMAGE.  */
 
 #include <errno.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 #include "backtrace.h"
 #include "internal.h"
diff --git a/libbacktrace/mmap.c b/libbacktrace/mmap.c
index 81389df223e..04aae85e586 100644
--- a/libbacktrace/mmap.c
+++ b/libbacktrace/mmap.c
@@ -36,6 +36,7 @@ POSSIBILITY OF SUCH DAMAGE.  */
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/types.h>
 #include <sys/mman.h>
 
 #include "backtrace.h"