diff --git a/ChangeLog b/ChangeLog
index 84eb089b01..f345cad627 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2017-02-19  Zack Weinberg  <zackw@panix.com>
+
+	* rt/tst-mqueue4.c: Include stdint.h.
+
 2017-02-17  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/arm/libm-test-ulps: Update.
diff --git a/rt/tst-mqueue4.c b/rt/tst-mqueue4.c
index 1718f59e82..8992193cac 100644
--- a/rt/tst-mqueue4.c
+++ b/rt/tst-mqueue4.c
@@ -23,6 +23,7 @@
 #include <limits.h>
 #include <signal.h>
 #include <stdio.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>