diff --git a/tests/sys_sem_test.cpp b/tests/sys_sem_test.cpp
index eaf2b8f..dff34c8 100644
--- a/tests/sys_sem_test.cpp
+++ b/tests/sys_sem_test.cpp
@@ -31,7 +31,7 @@
 #include <errno.h>
 #include <sys/sem.h>
 
-#include "TemporaryFile.h"
+#include <android-base/file.h>
 
 TEST(sys_sem, smoke) {
   if (semctl(-1, 0, IPC_RMID) == -1 && errno == ENOSYS) {
@@ -41,7 +41,7 @@
 
   // Create a semaphore.
   TemporaryDir dir;
-  key_t key = ftok(dir.dirname, 1);
+  key_t key = ftok(dir.path, 1);
   int id = semget(key, 1, IPC_CREAT|0666);
   ASSERT_NE(id, -1);