diff --git a/docs/cell.html b/docs/cell.html
index 4fd12e2b23c..7104c84c4d9 100644
--- a/docs/cell.html
+++ b/docs/cell.html
@@ -36,6 +36,11 @@ To use the driver you'll need a Cell system, such as a PS3 running Linux,
 or the Cell Simulator (untested, though).
 </p>
 
+<p>
+If using Cell SDK 3.0, first edit configs/linux-cell and add
+<code>-DSPU_MAIN_PARAM_LONG_LONG</code> to the SPU_CFLAGS.
+</p>
+
 <p>
 To compile the code, run <code>make linux-cell</code>.
 </p>