diff --git a/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_app.c b/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_app.c
index 1ef645812e..ce40ff5861 100644
--- a/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_app.c
+++ b/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_app.c
@@ -79,7 +79,7 @@ esp_err_t esp_secure_boot_verify_ecdsa_signature_block(const esp_secure_boot_sig
     }
 
     if (sig_block->version != 0) {
-        ESP_LOGE(TAG, "image has invalid signature version field 0x%08x", sig_block->version);
+        ESP_LOGE(TAG, "image has invalid signature version field 0x%08x (image without a signature?)", sig_block->version);
         return ESP_FAIL;
     }
 
diff --git a/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_bootloader.c b/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_bootloader.c
index f8bf7b56dd..71e3558c3e 100644
--- a/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_bootloader.c
+++ b/components/bootloader_support/src/secure_boot_v1/secure_boot_signatures_bootloader.c
@@ -79,7 +79,7 @@ esp_err_t esp_secure_boot_verify_ecdsa_signature_block(const esp_secure_boot_sig
     }
 
     if (sig_block->version != 0) {
-        ESP_LOGE(TAG, "image has invalid signature version field 0x%08x", sig_block->version);
+        ESP_LOGE(TAG, "image has invalid signature version field 0x%08x (image without a signature?)", sig_block->version);
         return ESP_FAIL;
     }