diff --git a/include/binder/PermissionCache.h b/include/binder/PermissionCache.h
index 1171d48..bcdf0c2 100644
--- a/include/binder/PermissionCache.h
+++ b/include/binder/PermissionCache.h
@@ -22,6 +22,7 @@
 
 #include <utils/String16.h>
 #include <utils/Singleton.h>
+#include <utils/SortedVector.h>
 
 namespace android {
 // ---------------------------------------------------------------------------