diff --git a/libgralloc/framebuffer.cpp b/libgralloc/framebuffer.cpp
index 31978f0..4f84011 100644
--- a/libgralloc/framebuffer.cpp
+++ b/libgralloc/framebuffer.cpp
@@ -291,7 +291,7 @@
     float xdpi = (info.xres * 25.4f) / info.width;
     float ydpi = (info.yres * 25.4f) / info.height;
     //The reserved[3] field is used to store FPS by the driver.
-    float fps  = info.reserved[3];
+    float fps  = info.reserved[3] & 0xFF;
 
     ALOGI("using (fd=%d)\n"
           "id           = %s\n"