diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
index dd65348..975631c 100644
--- a/services/surfaceflinger/Client.cpp
+++ b/services/surfaceflinger/Client.cpp
@@ -18,6 +18,7 @@
 #include <sys/types.h>
 
 #include <binder/PermissionCache.h>
+#include <binder/IPCThreadState.h>
 
 #include <private/android_filesystem_config.h>