diff --git a/cores/esp8266/core_esp8266_eboot_command.c b/cores/esp8266/core_esp8266_eboot_command.c
index 60c92bf18..ee3ccb480 100644
--- a/cores/esp8266/core_esp8266_eboot_command.c
+++ b/cores/esp8266/core_esp8266_eboot_command.c
@@ -60,7 +60,7 @@ int eboot_command_read(struct eboot_command* cmd)
     }
 
     uint32_t crc32 = eboot_command_calculate_crc32(cmd);
-    if (cmd->magic & EBOOT_MAGIC_MASK != EBOOT_MAGIC || 
+    if ((cmd->magic & EBOOT_MAGIC_MASK) != EBOOT_MAGIC ||
         cmd->crc32 != crc32) {
         return 1;
     }
diff --git a/cores/esp8266/core_esp8266_flash_utils.c b/cores/esp8266/core_esp8266_flash_utils.c
index 6f8a34f41..0713998a6 100644
--- a/cores/esp8266/core_esp8266_flash_utils.c
+++ b/cores/esp8266/core_esp8266_flash_utils.c
@@ -28,7 +28,7 @@
 
 int SPIEraseAreaEx(const uint32_t start, const uint32_t size)
 {
-    if (start & (FLASH_SECTOR_SIZE - 1) != 0) {
+    if ((start & (FLASH_SECTOR_SIZE - 1)) != 0) {
         return 1;
     }