diff --git a/mandel.s b/mandel.s
index be1f59e..9d3a2a6 100644
--- a/mandel.s
+++ b/mandel.s
@@ -438,9 +438,9 @@ next:
     ; dist = 0
     ; iter = 0
     lda #00
-    ldx iter - zx
+    ldx #(iter - zx + 1)
 initloop:
-    sta zx,x
+    sta zx - 1,x
     dex
     bne initloop
 
@@ -705,6 +705,7 @@ loop_sx:
     zoom_factor cx, sx, zoom, aspect_x
     zoom_factor cy, sy, zoom, aspect_y
     jsr mandelbrot
+    inc iter
     jsr pset
 
     clc