diff --git a/USERGUIDE-DEV.md b/USERGUIDE-DEV.md
index edf3b8c52..72c9e9f42 100644
--- a/USERGUIDE-DEV.md
+++ b/USERGUIDE-DEV.md
@@ -1123,7 +1123,8 @@ If you want to use MAME standalone then you need to place the following ROM file
 a2diskiing.zip
 apple2e.zip
 d2fdc.zip
-votrax.zip
+votrsc01.zip
+votrsc01a.zip
 ```
 
 Note that you will need to enable UI controls in MAME to be able to exit the emulator via the normal exit key. The following page documents the default keys for exiting and toggling UI mode:\
diff --git a/USERGUIDE.md b/USERGUIDE.md
index fd973dac0..3cc3f1e0a 100644
--- a/USERGUIDE.md
+++ b/USERGUIDE.md
@@ -1121,7 +1121,8 @@ If you want to use MAME standalone then you need to place the following ROM file
 a2diskiing.zip
 apple2e.zip
 d2fdc.zip
-votrax.zip
+votrsc01.zip
+votrsc01a.zip
 ```
 
 Note that you will need to enable UI controls in MAME to be able to exit the emulator via the normal exit key. The following page documents the default keys for exiting and toggling UI mode:\