diff --git a/src/mame/includes/abc80x.h b/src/mame/includes/abc80x.h
index da86422f50d..f4235dd7864 100644
--- a/src/mame/includes/abc80x.h
+++ b/src/mame/includes/abc80x.h
@@ -42,7 +42,7 @@
 #define ABC806_ATTR_RAM_SIZE    0x800
 #define ABC806_VIDEO_RAM_SIZE   0x20000
 
-#define ABC800_CHAR_WIDTH   12
+#define ABC800_CHAR_WIDTH   6
 #define ABC800_CCLK         ABC800_X01/ABC800_CHAR_WIDTH
 
 #define SCREEN_TAG          "screen"