diff --git a/cpu/arm_cortexa8/cpu.c b/cpu/arm_cortexa8/cpu.c
index 822ee7d97e..5a5981e405 100644
--- a/cpu/arm_cortexa8/cpu.c
+++ b/cpu/arm_cortexa8/cpu.c
@@ -35,6 +35,9 @@
 #include <command.h>
 #include <asm/system.h>
 #include <asm/cache.h>
+#ifndef CONFIG_L2_OFF
+#include <asm/arch/sys_proto.h>
+#endif
 
 static void cache_flush(void);