diff --git a/forge-gui/res/blockdata/blocks.txt b/forge-gui/res/blockdata/blocks.txt
index bf2901ed696..c7822dda5ab 100644
--- a/forge-gui/res/blockdata/blocks.txt
+++ b/forge-gui/res/blockdata/blocks.txt
@@ -76,6 +76,6 @@ Iconic Masters, 3/6/XLN, IMA
 Masters 25, 3/6/XLN, A25
 Dominaria, 3/6/DOM, DOM
 Core Set 2019, 3/6/M19, M19
-Guilds of Ravnica, 3/6/GRN, GRN
+Guilds of Ravnica, 3/6/M19, GRN
 Ultimate Masters, 3/6/M19, UMA
-Ravnica Allegiance, 3/6/GRN, RNA
\ No newline at end of file
+Ravnica Allegiance, 3/6/M19, RNA
\ No newline at end of file