diff --git a/platformio.ini b/platformio.ini
index f3caa585e..4c78707db 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -217,7 +217,7 @@ build_flags =
   ; restrict to minimal mime-types
   -DMIMETYPE_MINIMAL
   ; other special-purpose framework flags (see https://docs.platformio.org/en/latest/platforms/espressif8266.html)
-  ; -D PIO_FRAMEWORK_ARDUINO_MMU_CACHE16_IRAM48 ;; in case of linker errors like "section `.text1' will not fit in region `iram1_0_seg'"
+  -D PIO_FRAMEWORK_ARDUINO_MMU_CACHE16_IRAM48 ;; in case of linker errors like "section `.text1' will not fit in region `iram1_0_seg'"
   ; -D PIO_FRAMEWORK_ARDUINO_MMU_CACHE16_IRAM48_SECHEAP_SHARED ;; (experimental) adds some extra heap, but may cause slowdown
 
 lib_deps =