diff --git a/samples/proc_chain/proc_chain_demo.c b/samples/proc_chain/proc_chain_demo.c
index cdad4a06bfea0535b21a60a5b8f52174a779f4eb..b090d0c05b8a5990dc6cb1d8d56bff55a51b6ca0 100644
--- a/samples/proc_chain/proc_chain_demo.c
+++ b/samples/proc_chain/proc_chain_demo.c
@@ -5,10 +5,7 @@
  */
 
 
-#include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
 #include <stdarg.h>