diff --git a/cpu/at32ap/Makefile b/cpu/at32ap/Makefile
index e08f27383da108cd82a3e549bbfcb4e99dba6492..60899c79ea0b59c24fb3315412362a939afbb219 100644
--- a/cpu/at32ap/Makefile
+++ b/cpu/at32ap/Makefile
@@ -30,7 +30,7 @@ LIB	:= $(obj)lib$(CPU).a
 START-y			+= start.o
 
 COBJS-y			+= cpu.o
-COBJS-y			+= hsdramc.o
+COBJS-$(CONFIG_SYS_HSDRAMC) += hsdramc.o
 COBJS-y			+= exception.o
 COBJS-y			+= cache.o
 COBJS-y			+= interrupts.o
diff --git a/cpu/at32ap/hsdramc.c b/cpu/at32ap/hsdramc.c
index f74121cd46239aa3d9335a481b72a1e0b72254cd..b6eae667c242ab0b22fe8cdcd54d7a01a9cdda61 100644
--- a/cpu/at32ap/hsdramc.c
+++ b/cpu/at32ap/hsdramc.c
@@ -21,7 +21,6 @@
  */
 #include <common.h>
 
-#ifdef CONFIG_SYS_HSDRAMC
 #include <asm/io.h>
 #include <asm/sdram.h>
 
@@ -116,5 +115,3 @@ unsigned long sdram_init(void *sdram_base, const struct sdram_config *config)
 
 	return sdram_size;
 }
-
-#endif /* CONFIG_SYS_HSDRAMC */