diff --git a/vp8/encoder/ratectrl.c b/vp8/encoder/ratectrl.c
index 05e152e..e1c8c4e 100644
--- a/vp8/encoder/ratectrl.c
+++ b/vp8/encoder/ratectrl.c
@@ -388,13 +388,13 @@
         int Q = (cpi->common.frame_flags & FRAMEFLAGS_KEY)
                 ? cpi->avg_frame_qindex : cpi->ni_av_qi;
 
-        int initial_boost = 24; /* |2.5 * per_frame_bandwidth| */
+        int initial_boost = 32; /* |3.0 * per_frame_bandwidth| */
         /* Boost depends somewhat on frame rate: only used for 1 layer case. */
         if (cpi->oxcf.number_of_layers == 1) {
           kf_boost = MAX(initial_boost, (int)(2 * cpi->output_frame_rate - 16));
         }
         else {
-          /* Initial factor: set target size to: |2.5 * per_frame_bandwidth|. */
+          /* Initial factor: set target size to: |3.0 * per_frame_bandwidth|. */
           kf_boost = initial_boost;
         }