diff --git a/tests/unit_tests/example_test/test.c b/tests/unit_tests/example_test/test.c
index ea31b884..c174025c 100644
--- a/tests/unit_tests/example_test/test.c
+++ b/tests/unit_tests/example_test/test.c
@@ -4,6 +4,7 @@
 #include <stdarg.h>
 #include <string.h>
 #include <setjmp.h>
+#include <stdint.h>
 #include <cmocka.h>
 
 static int
diff --git a/tests/unit_tests/example_test/test2.c b/tests/unit_tests/example_test/test2.c
index 5a186d5d..bb54633c 100644
--- a/tests/unit_tests/example_test/test2.c
+++ b/tests/unit_tests/example_test/test2.c
@@ -4,6 +4,7 @@
 #include <stdarg.h>
 #include <string.h>
 #include <setjmp.h>
+#include <stdint.h>
 #include <cmocka.h>
 
 
diff --git a/tests/unit_tests/openvpn/mock_msg.c b/tests/unit_tests/openvpn/mock_msg.c
index 3ede98c0..3fa9a166 100644
--- a/tests/unit_tests/openvpn/mock_msg.c
+++ b/tests/unit_tests/openvpn/mock_msg.c
@@ -32,6 +32,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <setjmp.h>
+#include <stdint.h>
 #include <cmocka.h>