diff --git a/sys/powerpc/booke/booke_machdep.c b/sys/powerpc/booke/booke_machdep.c
index 1a37959b439fc2..c03a7a5b28d5c2 100644
--- a/sys/powerpc/booke/booke_machdep.c
+++ b/sys/powerpc/booke/booke_machdep.c
@@ -148,6 +148,10 @@
 #define debugf(fmt, args...)
 #endif
 
+/*
+ * TEST
+ */
+
 extern unsigned char _etext[];
 extern unsigned char _edata[];
 extern unsigned char __bss_start[];