diff --git a/tests/pkd/pkd_hello.c b/tests/pkd/pkd_hello.c
index a64124d3..069ed8df 100644
--- a/tests/pkd/pkd_hello.c
+++ b/tests/pkd/pkd_hello.c
@@ -8,6 +8,7 @@
 #include <fcntl.h>
 #include <setjmp.h> // for cmocka
 #include <stdarg.h> // for cmocka
+#include <stdint.h> // for cmocka
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
diff --git a/tests/pkd/pkd_keyutil.c b/tests/pkd/pkd_keyutil.c
index 4e032f17..daaab134 100644
--- a/tests/pkd/pkd_keyutil.c
+++ b/tests/pkd/pkd_keyutil.c
@@ -8,6 +8,7 @@
 
 #include <setjmp.h> // for cmocka
 #include <stdarg.h> // for cmocka
+#include <stdint.h> // for cmocka
 #include <unistd.h> // for cmocka
 #include <cmocka.h>