diff --git a/tools/zipalign/ZipEntry.h b/tools/zipalign/ZipEntry.h
index 431b6db..247cf69 100644
--- a/tools/zipalign/ZipEntry.h
+++ b/tools/zipalign/ZipEntry.h
@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <stdio.h>
+#include <time.h>
 
 namespace android {