diff --git a/Makefile b/Makefile
index 32fe36110f..8e1f4d3e36 100644
--- a/Makefile
+++ b/Makefile
@@ -100,7 +100,7 @@ TARGETS+=busybox tinylogin
 # Some nice debugging tools
 #TARGETS+=gdb strace
 
-# The Valgrind debugger
+# The Valgrind debugger (x86 only)
 #TARGETS+=valgrind
 
 # Pick your root filesystem type.