diff --git a/corecheck/tests/fdleak_open.c b/corecheck/tests/fdleak_open.c
index 16830fe2a..22b4228d8 100644
--- a/corecheck/tests/fdleak_open.c
+++ b/corecheck/tests/fdleak_open.c
@@ -1,5 +1,5 @@
 #include <fcntl.h>
-
+#include <unistd.h>
 int
 main (int argc, char **argv)
 {
diff --git a/corecheck/tests/fdleak_socketpair.c b/corecheck/tests/fdleak_socketpair.c
index a8ddf9c10..da3e91204 100644
--- a/corecheck/tests/fdleak_socketpair.c
+++ b/corecheck/tests/fdleak_socketpair.c
@@ -1,5 +1,5 @@
 #include <sys/socket.h>
-
+#include <unistd.h>
 int
 main (int argc, char **argv)
 {