diff --git a/emulators/mame.yml b/emulators/mame.yml
index b6dc26c3..79bbc5b6 100644
--- a/emulators/mame.yml
+++ b/emulators/mame.yml
@@ -3183,7 +3183,7 @@ files:
     required: true
     category: bios_zip
     system: casio-loopy
-    source_ref: "src/mame/casio/casloopy.cpp:2105-2462"
+    source_ref: "src/mame/casio/casloopy.cpp:2097-2105"
     contents:
       - name: hd6437021.lsi302
         description: SH-1 CPU internal mask ROM
diff --git a/emulators/mamemess.yml b/emulators/mamemess.yml
index aab13a60..0daad3bf 100644
--- a/emulators/mamemess.yml
+++ b/emulators/mamemess.yml
@@ -680,7 +680,7 @@ files:
     required: true
     category: bios_zip
     system: casio-loopy
-    source_ref: "src/mame/casio/casloopy.cpp:2105-2462"
+    source_ref: "src/mame/casio/casloopy.cpp:2097-2105"
     contents:
       - name: hd6437021.lsi302
         description: SH-1 CPU internal mask ROM