diff --git a/components/bootloader_support/src/idf/secure_boot_signatures.c b/components/bootloader_support/src/idf/secure_boot_signatures.c
index ee541445bd..ca66be7059 100644
--- a/components/bootloader_support/src/idf/secure_boot_signatures.c
+++ b/components/bootloader_support/src/idf/secure_boot_signatures.c
@@ -260,8 +260,8 @@ esp_err_t esp_secure_boot_verify_rsa_signature_block(const ets_secure_boot_signa
             goto exit;
         }
 
-        ret = mbedtls_rsa_rsassa_pss_verify( &pk, mbedtls_ctr_drbg_random, &ctr_drbg, MBEDTLS_RSA_PUBLIC, MBEDTLS_MD_SHA256, 32, 
-                                            sig_block->block[i].image_digest, sig_be);
+        ret = mbedtls_rsa_rsassa_pss_verify( &pk, mbedtls_ctr_drbg_random, &ctr_drbg, MBEDTLS_RSA_PUBLIC, MBEDTLS_MD_SHA256, DIGEST_LEN,
+                                            image_digest, sig_be);
         if (ret != 0) {
             ESP_LOGE(TAG, "Failed mbedtls_rsa_rsassa_pss_verify, err: %d", ret);
         } else {