diff --git a/lib/krb5/derived-key-test.c b/lib/krb5/derived-key-test.c
index 76f57adba..d2f952775 100644
--- a/lib/krb5/derived-key-test.c
+++ b/lib/krb5/derived-key-test.c
@@ -31,6 +31,7 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
 #include "krb5_locl.h"
+#include <err.h>
 
 RCSID("$Id$");
 
diff --git a/lib/krb5/parse-name-test.c b/lib/krb5/parse-name-test.c
index 66f865c28..488ce1235 100644
--- a/lib/krb5/parse-name-test.c
+++ b/lib/krb5/parse-name-test.c
@@ -31,6 +31,7 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
 #include "krb5_locl.h"
+#include <err.h>
 
 RCSID("$Id$");
 
diff --git a/lib/krb5/string-to-key-test.c b/lib/krb5/string-to-key-test.c
index 8e2e77232..312a8650d 100644
--- a/lib/krb5/string-to-key-test.c
+++ b/lib/krb5/string-to-key-test.c
@@ -31,6 +31,7 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
 #include "krb5_locl.h"
+#include <err.h>
 
 RCSID("$Id$");