diff --git a/lkmpg/hello_proc.c b/lkmpg/hello_proc.c
index 903dc4d..8367cc6 100644
--- a/lkmpg/hello_proc.c
+++ b/lkmpg/hello_proc.c
@@ -3,6 +3,9 @@
  *
  * http://pointer-overloading.blogspot.com/2013/09/linux-creating-entry-in-proc-file.html
  *
+ * modified for kernel version >= 5.6
+ * https://stackoverflow.com/questions/64931555/how-to-fix-error-passing-argument-4-of-proc-create-from-incompatible-pointer
+ *  
  */
 
 #include <linux/module.h>