diff --git a/boot/cypress/MCUBootApp/cy_security_cnt.c b/boot/cypress/MCUBootApp/cy_security_cnt.c
index 9ccb3be..81aa54e 100644
--- a/boot/cypress/MCUBootApp/cy_security_cnt.c
+++ b/boot/cypress/MCUBootApp/cy_security_cnt.c
@@ -17,15 +17,15 @@
 #include "bootutil/security_cnt.h"
 #include <stdint.h>
 
-int32_t
+fih_int
 boot_nv_security_counter_init(void)
 {
     /* Do nothing. */
     return 0;
 }
 
-int32_t
-boot_nv_security_counter_get(uint32_t image_id, uint32_t *security_cnt)
+fih_int
+boot_nv_security_counter_get(uint32_t image_id, fih_int *security_cnt)
 {
     (void)image_id;
     *security_cnt = 30;
diff --git a/boot/cypress/MCUBootApp/main.c b/boot/cypress/MCUBootApp/main.c
index d148215..fdc6c6e 100644
--- a/boot/cypress/MCUBootApp/main.c
+++ b/boot/cypress/MCUBootApp/main.c
@@ -36,6 +36,9 @@
 
 #include "bootutil/bootutil_log.h"
 
+#include "bootutil/fault_injection_hardening.h"
+#include "bootutil/fault_injection_hardening_delay_rng.h"
+
 /* Define pins for UART debug output */
 #define CYBSP_UART_ENABLED 1U
 #define CYBSP_UART_HW SCB5
@@ -75,6 +78,7 @@
     struct boot_rsp rsp;
     cy_rslt_t rc = CY_RSLT_TYPE_ERROR;
     bool boot_succeeded = false;
+    fih_int fih_rc = FIH_FAILURE;
 
     init_cycfg_clocks();
     init_cycfg_peripherals();
@@ -113,7 +117,9 @@
     if (CY_SMIF_SUCCESS == rc)
 #endif
     {
-        if (boot_go(&rsp) == 0)
+
+        FIH_CALL(boot_go, fih_rc, &rsp);
+        if (fih_eq(fih_rc, FIH_SUCCESS))
         {
             BOOT_LOG_INF("User Application validated successfully");
             do_boot(&rsp);