diff --git a/CHANGELIST.md b/CHANGELIST.md
index 6ba8c6b1..b905e255 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -35,6 +35,7 @@
 - Add suppl support to Xbox
 - Support single digit subs
 - Fix info tool hash finding
+- Fix missing size for ISO data
 
 ### 2.5 (2023-03-12)
 
diff --git a/MPF.Modules/BaseParameters.cs b/MPF.Modules/BaseParameters.cs
index 12955b3b..421102ca 100644
--- a/MPF.Modules/BaseParameters.cs
+++ b/MPF.Modules/BaseParameters.cs
@@ -1311,6 +1311,7 @@ namespace MPF.Modules
 
             var rom = datafile.Games[0].Roms[0];
 
+            Int64.TryParse(rom.Size, out size);
             crc32 = rom.Crc;
             md5 = rom.Md5;
             sha1 = rom.Sha1;