diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c
index 88561a7..32c9169 100644
--- a/drivers/block/systemace.c
+++ b/drivers/block/systemace.c
@@ -67,7 +67,7 @@ static void ace_writew(u16 val, unsigned off)
 #endif
 	}
 	else
-		out16(base + off, val);
+		writew(val, base + off);
 }
 
 static u16 ace_readw(unsigned off)
@@ -80,7 +80,7 @@ static u16 ace_readw(unsigned off)
 #endif
 	}
 	else
-		return in16(base + off);
+		return readw(base + off);
 }
 
 static unsigned long systemace_read(int dev, unsigned long start,