2 files changed, 5 insertions, 2 deletions
diff --git a/lib/kernel/test/os_SUITE_data/my_echo.c b/lib/kernel/test/os_SUITE_data/my_echo.c
index 712c828bb5..439f812af1 100644
--- a/lib/kernel/test/os_SUITE_data/my_echo.c
+++ b/lib/kernel/test/os_SUITE_data/my_echo.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #ifdef __WIN32__
 #include <windows.h>
 
@@ -25,8 +26,6 @@ int wmain(int argc, wchar_t **argv)
 }
 #else
 
-#include <stdio.h>
-
 int
 main(int argc, char** argv)
 {
diff --git a/lib/kernel/test/os_SUITE_data/my_fds.c b/lib/kernel/test/os_SUITE_data/my_fds.c
index 704a4d1e1d..8b1ce13822 100644
--- a/lib/kernel/test/os_SUITE_data/my_fds.c
+++ b/lib/kernel/test/os_SUITE_data/my_fds.c
@@ -1,5 +1,9 @@
 #include <stdio.h>
 
+#ifdef HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
+
 int
 main(int argc, char** argv)
 {