diff --git a/kernel_module/README.adoc b/kernel_module/README.adoc
index 551ceb3..d4ca6d3 100644
--- a/kernel_module/README.adoc
+++ b/kernel_module/README.adoc
@@ -5,11 +5,6 @@
 .. link:hello.c[]
 .. link:hello2.c[]
 .. link:printk.c[]
-. Panic and friends
-.. link:panic.c[]
-.. link:oops.c[]
-.. link:dump_stack.c[]
-.. link:warn_on.c[]
 . Modules
 .. link:params.c[]
 .. link:vermagic.c[]
diff --git a/kernel_module/dump_stack.c b/kernel_module/dump_stack.c
index a46d12d..0e92ce9 100644
--- a/kernel_module/dump_stack.c
+++ b/kernel_module/dump_stack.c
@@ -1,3 +1,5 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#dump_stack */
+
 #include <linux/module.h>
 #include <linux/kernel.h>
 
diff --git a/kernel_module/mmap.c b/kernel_module/mmap.c
index 85cf1c7..4a0dd26 100644
--- a/kernel_module/mmap.c
+++ b/kernel_module/mmap.c
@@ -1,4 +1,4 @@
-/* https://github.com/cirosantilli/linux-kernel-module-cheat#kthreads */
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#mmap */
 
 #include <linux/fs.h>
 #include <linux/init.h>
diff --git a/kernel_module/oops.c b/kernel_module/oops.c
index d29e690..9d2337b 100644
--- a/kernel_module/oops.c
+++ b/kernel_module/oops.c
@@ -1,3 +1,5 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#kernel-panic-and-oops */
+
 #include <linux/module.h>
 #include <linux/kernel.h>
 
diff --git a/kernel_module/panic.c b/kernel_module/panic.c
index 512a951..37501e5 100644
--- a/kernel_module/panic.c
+++ b/kernel_module/panic.c
@@ -1,3 +1,7 @@
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#kernel-panic-and-oops */
+
+Kernel panic and oops
+
 #include <linux/module.h>
 #include <linux/kernel.h>
 
diff --git a/kernel_module/warn_on.c b/kernel_module/warn_on.c
index 8d787cf..8f67a7a 100644
--- a/kernel_module/warn_on.c
+++ b/kernel_module/warn_on.c
@@ -1,6 +1,4 @@
-/*
-Prints a backtrace.
-*/
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#warn_on */
 
 #include <linux/module.h>
 #include <linux/kernel.h>