diff --git a/Continuum/sheet.json b/Continuum/sheet.json
index 401c28189b..765d0fd87a 100644
--- a/Continuum/sheet.json
+++ b/Continuum/sheet.json
@@ -3,6 +3,6 @@
 "css": "Continuum.css",
 "authors": "Roger",
 "roll20userid": "61424",
-"preview": "continuum.png",
+"preview": "continuum.PNG",
 "instructions": "This is likely the final draft of the sheet. Known limitations include: Spanning across 0 causes 1 year error in span spent; Age, previous span spent, and departing must all be manually entered into the first span of a new span block(limitation of repeating sections in roll20); departure time doesn't auto calculate, there are several reasons for this."
 }