diff --git a/platformio.ini b/platformio.ini
index c89bc68c..6becb27d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -820,6 +820,7 @@ build_flags_S =
   -D USERMOD_ARTIFX ; WLEDMM usermod
   -D WLEDMM_FASTPATH ; WLEDMM experimental option. Reduces audio lag (latency), and allows for faster LED framerates
   -D WLEDMM_PROTECT_SERVICE ;; WLEDMM experimental feature to prevent crashes when effects are drawing while async_tcp tries to modify segment or strip objects.
+  ; -D WLED_DEBUG_HEAP ;; WLEDMM enable heap debugging
   ; -D WLED_DISABLE_LOXONE
   ; -D WLED_DISABLE_ALEXA
   ; -D WLED_DISABLE_HUESYNC
@@ -982,6 +983,7 @@ build_flags =
 [Debug_Flags]
 build_flags = 
   -DDEBUG=1 ;; enable some debug assertions in the platform core
+  ; -D WLED_DEBUG_HEAP ;; WLEDMM enable heap debugging
   -D WLED_DEBUG ; lots of generic debug messages
   -D SR_DEBUG ; some extra debug messages from audioreactive
   ; -D MIC_LOGGER ; for sound input monitoring & debugging (use arduino serial plotter)
@@ -1047,6 +1049,7 @@ build_unflags = ${common.build_unflags}
   -D CORE_DEBUG_LEVEL=0
 build_flags = ${esp32_4MB_M_base.build_flags} 
   ${Debug_Flags.build_flags}
+  -D WLED_DEBUG_HEAP ;; WLEDMM enable heap debugging
   -D CORE_DEBUG_LEVEL=2   ;; 2=warning
   -D WLED_RELEASE_NAME=esp32_16MB_M_debug
 monitor_filters = esp32_exception_decoder
@@ -1289,6 +1292,7 @@ build_unflags = ${common.build_unflags}
 build_flags = ${esp32_4MB_V4_M_base.build_flags}
   ${Debug_Flags.build_flags}
   -D CORE_DEBUG_LEVEL=4  ;; 0=none, 1=error, 2=warning, 3=info, 4=debug, 5=verbose
+  -D WLED_DEBUG_HEAP ;; WLEDMM enable heap debugging
   -D WLED_RELEASE_NAME=esp32_16MB_V4_M_debug
   -D WLED_WATCHDOG_TIMEOUT=0 #-D WLED_DISABLE_BROWNOUT_DET
   -D ARDUINO_USB_CDC_ON_BOOT=0 ; needed for arduino-esp32 >=2.0.4; avoids errors on startup