diff --git a/day-14/two.go b/day-14/two.go
index 06d7d8b..f29da8d 100644
--- a/day-14/two.go
+++ b/day-14/two.go
@@ -32,8 +32,8 @@ func cycleMany(image img, iterations int) {
 		copy(cachedImages[i+1], image.raw)
 	}
 
-	period := i - start                                            // length of a full period
-	copy(image.raw, cachedImages[start+((iterations-i-1)%period)]) // copy cachedImage into image.raw
+	period := i - start                                              // length of a full period
+	copy(image.raw, cachedImages[start+((iterations-i-1)%period)+1]) // copy cachedImage into image.raw
 }
 
 // two returns the load of all boulders after 1000000000 cycles