diff --git a/tools/zipalign/ZipAlign.cpp b/tools/zipalign/ZipAlign.cpp
index aef91a594e..d56ac291ac 100644
--- a/tools/zipalign/ZipAlign.cpp
+++ b/tools/zipalign/ZipAlign.cpp
@@ -19,8 +19,9 @@
  */
 #include "ZipFile.h"
 
-#include <stdlib.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 using namespace android;
 
diff --git a/tools/zipalign/ZipEntry.cpp b/tools/zipalign/ZipEntry.cpp
index a9c2d33107..63d75d1057 100644
--- a/tools/zipalign/ZipEntry.cpp
+++ b/tools/zipalign/ZipEntry.cpp
@@ -23,10 +23,11 @@
 #include "ZipEntry.h"
 #include <utils/Log.h>
 
-#include <stdio.h>
-#include <string.h>
 #include <assert.h>
 #include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
 
 using namespace android;