diff --git a/modules/gralloc/framebuffer.cpp b/modules/gralloc/framebuffer.cpp
index 2d0fa25..e73724f 100644
--- a/modules/gralloc/framebuffer.cpp
+++ b/modules/gralloc/framebuffer.cpp
@@ -26,6 +26,9 @@
 
 #include <fcntl.h>
 #include <errno.h>
+#include <sys/ioctl.h>
+#include <string.h>
+#include <stdlib.h>
 
 #include <cutils/log.h>
 #include <cutils/atomic.h>