diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index 61fbb53e3a..aaef68fa27 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -355,24 +355,20 @@ def _detect_variant(value):
 
 
 def final_validate(config):
-    if CONF_PLATFORMIO_OPTIONS not in fv.full_config.get()[CONF_ESPHOME]:
+    if not (
+        pio_options := fv.full_config.get()[CONF_ESPHOME].get(CONF_PLATFORMIO_OPTIONS)
+    ):
+        # Not specified or empty
         return config
 
     pio_flash_size_key = "board_upload.flash_size"
     pio_partitions_key = "board_build.partitions"
-    if (
-        CONF_PARTITIONS in config
-        and pio_partitions_key
-        in fv.full_config.get()[CONF_ESPHOME][CONF_PLATFORMIO_OPTIONS]
-    ):
+    if CONF_PARTITIONS in config and pio_partitions_key in pio_options:
         raise cv.Invalid(
             f"Do not specify '{pio_partitions_key}' in '{CONF_PLATFORMIO_OPTIONS}' with '{CONF_PARTITIONS}' in esp32"
         )
 
-    if (
-        pio_flash_size_key
-        in fv.full_config.get()[CONF_ESPHOME][CONF_PLATFORMIO_OPTIONS]
-    ):
+    if pio_flash_size_key in pio_options:
         raise cv.Invalid(
             f"Please specify {CONF_FLASH_SIZE} within esp32 configuration only"
         )