diff --git a/src/mess/machine/dec_lk201.h b/src/mess/machine/dec_lk201.h
index fb3151d9c8e..3c17bf78aea 100644
--- a/src/mess/machine/dec_lk201.h
+++ b/src/mess/machine/dec_lk201.h
@@ -83,7 +83,7 @@ private:
 
 	UINT8 sci_ctl2;
 	UINT8 sci_status;
-	UINT8 sci_data;
+	//UINT8 sci_data;
 
 	UINT8 spi_status;
 	UINT8 spi_data;
diff --git a/src/mess/machine/p1_hdc.h b/src/mess/machine/p1_hdc.h
index f626c3a31fd..4a7f498604c 100644
--- a/src/mess/machine/p1_hdc.h
+++ b/src/mess/machine/p1_hdc.h
@@ -43,7 +43,7 @@ protected:
 private:
 	required_device<wd2010_device> m_hdc;
 
-	UINT8 m_ram[0x800];
+	//UINT8 m_ram[0x800];
 
 public:
 	DECLARE_READ8_MEMBER(p1_HDC_r);