diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 9c17fb9..6263e2d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -562,6 +562,9 @@
 	  for distributions or general kernels, but only for kernel
 	  developers working on architecture code.
 
+	  Note that if you want to also test saved backtraces, you will
+	  have to enable STACKTRACE as well.
+
 	  Say N if you are unsure.
 
 config LKDTM