diff --git a/cvideo.c b/cvideo.c
index b915759..168ec7d 100644
--- a/cvideo.c
+++ b/cvideo.c
@@ -279,10 +279,14 @@ void cvideo_dma_handler(void) {
 
         // Then the border scanlines
         //
-        case 6 ... 68:
+        case 6 ... 67:
         case 261 ... 309:
             dma_channel_set_read_addr(dma_channel_0, border, true);
             break;
+        case 68:    // Last top-border line: re-anchor bline so bitmap[0] is at top
+            dma_channel_set_read_addr(dma_channel_0, border, true);
+            bline = 1;
+            break;
 
         // Now point the dma at the first buffer for the pixel data,
         // and preload the data for the next scanline