diff --git a/exynos4/hal/libgralloc_ump/framebuffer_device.cpp b/exynos4/hal/libgralloc_ump/framebuffer_device.cpp
index 2059af87..7b351f44 100644
--- a/exynos4/hal/libgralloc_ump/framebuffer_device.cpp
+++ b/exynos4/hal/libgralloc_ump/framebuffer_device.cpp
@@ -52,7 +52,7 @@
 #include "linux/fb.h"
 
 /* numbers of buffers for page flipping */
-#define NUM_BUFFERS 2
+#define NUM_BUFFERS 4
 
 enum {
     PAGE_FLIP = 0x00000001,