diff --git a/cpu/at32ap/hsmc3.h b/cpu/at32ap/hsmc3.h
index ec78cee..ca533b9 100644
--- a/cpu/at32ap/hsmc3.h
+++ b/cpu/at32ap/hsmc3.h
@@ -118,9 +118,9 @@
 	 | HSMC3_BF(name,value))
 
 /* Register access macros */
-#define hsmc3_readl(port,reg)					\
-	readl((port)->regs + HSMC3_##reg)
-#define hsmc3_writel(port,reg,value)				\
-	writel((value), (port)->regs + HSMC3_##reg)
+#define hsmc3_readl(reg)					\
+	readl((void *)HSMC_BASE + HSMC3_##reg)
+#define hsmc3_writel(reg,value)					\
+	writel((value), (void *)HSMC_BASE + HSMC3_##reg)
 
 #endif /* __CPU_AT32AP_HSMC3_H__ */