diff --git a/examples/porting/lv_port_disp_template.h b/examples/porting/lv_port_disp_template.h
index 403b5d22f..bf1e08d0e 100644
--- a/examples/porting/lv_port_disp_template.h
+++ b/examples/porting/lv_port_disp_template.h
@@ -29,6 +29,7 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
+void lv_port_disp_init(void);
 
 /**********************
  *      MACROS
diff --git a/examples/porting/lv_port_fs_template.h b/examples/porting/lv_port_fs_template.h
index 4e60f1e52..ef39d4f51 100644
--- a/examples/porting/lv_port_fs_template.h
+++ b/examples/porting/lv_port_fs_template.h
@@ -29,6 +29,7 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
+ void lv_port_fs_init(void);
 
 /**********************
  *      MACROS
diff --git a/examples/porting/lv_port_indev_template.h b/examples/porting/lv_port_indev_template.h
index 009a7bce7..00eac2559 100644
--- a/examples/porting/lv_port_indev_template.h
+++ b/examples/porting/lv_port_indev_template.h
@@ -30,6 +30,7 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
+void lv_port_indev_init(void);
 
 /**********************
  *      MACROS