diff --git a/core/embed/bootloader/messages.c b/core/embed/bootloader/messages.c
index 621564c10d..eab9c771b9 100644
--- a/core/embed/bootloader/messages.c
+++ b/core/embed/bootloader/messages.c
@@ -549,7 +549,7 @@ int process_msg_FirmwareUpload(uint8_t iface_num, uint32_t msg_size,
             FIRMWARE_IMAGE_MAGIC, FIRMWARE_IMAGE_MAXSIZE);
 
         if (current_hdr !=
-            (const image_header *)FIRMWARE_START + current_vhdr.hdrlen) {
+            (const image_header *)(FIRMWARE_START + current_vhdr.hdrlen)) {
           is_new = sectrue;
         }
       }
diff --git a/core/embed/bootloader_ci/messages.c b/core/embed/bootloader_ci/messages.c
index 8aee331717..c2e0c92e6a 100644
--- a/core/embed/bootloader_ci/messages.c
+++ b/core/embed/bootloader_ci/messages.c
@@ -546,7 +546,7 @@ int process_msg_FirmwareUpload(uint8_t iface_num, uint32_t msg_size,
             FIRMWARE_IMAGE_MAGIC, FIRMWARE_IMAGE_MAXSIZE);
 
         if (current_hdr !=
-            (const image_header *)FIRMWARE_START + current_vhdr.hdrlen) {
+            (const image_header *)(FIRMWARE_START + current_vhdr.hdrlen)) {
           is_new = sectrue;
         }
       }