diff --git a/ubb-vga/README b/ubb-vga/README
index 63f42eb..115399a 100644
--- a/ubb-vga/README
+++ b/ubb-vga/README
@@ -40,7 +40,7 @@ clock that's about 10% slower than the original. Luckily, most monitors
 don't mind.
 
 
-Single-double mode
+Single/double mode
 ------------------
 
 In single mode, only one set/clear can be performed per pixel. They are