diff --git a/libgralloc/framebuffer.cpp b/libgralloc/framebuffer.cpp
index 4935785..931024b 100644
--- a/libgralloc/framebuffer.cpp
+++ b/libgralloc/framebuffer.cpp
@@ -816,8 +816,8 @@
 
     float xdpi = (info.xres * 25.4f) / info.width;
     float ydpi = (info.yres * 25.4f) / info.height;
-    //The reserved[4] field is used to store FPS by the driver.
-    float fps  = info.reserved[4];
+    //The reserved[3] field is used to store FPS by the driver.
+    float fps  = info.reserved[3];
 
     ALOGI("using (fd=%d)\n"
           "id           = %s\n"