diff --git a/src/pvr2/yuv.c b/src/pvr2/yuv.c
index e88a5cc..8a898ea 100644
--- a/src/pvr2/yuv.c
+++ b/src/pvr2/yuv.c
@@ -149,6 +149,8 @@ void pvr2_yuv_write( unsigned char *data, uint32_t length )
         length -= tmp;
         if( pvr2_yuv_state.data_length == block_size ) {
             pvr2_yuv_process_block( pvr2_yuv_state.data );
+        } else {
+            return;
         }
     }