diff --git a/vpxenc.c b/vpxenc.c
index 059cdd5965990db3de039764585162b99a97153c..d32b21b5366018e20b7bda9578fca66d61f3a288 100644
--- a/vpxenc.c
+++ b/vpxenc.c
@@ -2128,6 +2128,7 @@ static void setup_pass(struct stream_state  *stream,
 
     stream->cx_time = 0;
     stream->nbytes = 0;
+    stream->frames_out = 0;
 }