diff --git a/src/mame/includes/btoads.h b/src/mame/includes/btoads.h
index 564b14621f2..578242a3c45 100644
--- a/src/mame/includes/btoads.h
+++ b/src/mame/includes/btoads.h
@@ -20,8 +20,8 @@ public:
 		  m_audiocpu(*this, "audiocpu"),
 		  m_bsmt(*this, "bsmt"),
 		  m_tlc34076(*this, "tlc34076"),
-		  m_vram_fg0(*this, "vram_fg0"),
-		  m_vram_fg1(*this, "vram_fg1"),
+		  m_vram_fg0(*this, "vram_fg0", 16),
+		  m_vram_fg1(*this, "vram_fg1", 16),
 		  m_vram_fg_data(*this, "vram_fg_data"),
 		  m_vram_bg0(*this, "vram_bg0"),
 		  m_vram_bg1(*this, "vram_bg1"),