diff --git a/src/signalDecoder.cpp b/src/signalDecoder.cpp
index f78d851..6a7b061 100644
--- a/src/signalDecoder.cpp
+++ b/src/signalDecoder.cpp
@@ -27,15 +27,17 @@
 
 /*----------------------------- rtl_433_ESP Internals -----------------------------*/
 
-#if defined(RTL_ANALYZER) || defined(RTL_ANALYZE)
-#  define rtl_433_Decoder_Stack 60000
-#elif defined(RTL_VERBOSE) || defined(RTL_DEBUG)
-#  define rtl_433_Decoder_Stack 30000
-#else
-#  if OOK_MODULATION
-#    define rtl_433_Decoder_Stack 10000
+#ifndef rtl_433_Decoder_Stack
+#  if defined(RTL_ANALYZER) || defined(RTL_ANALYZE)
+#    define rtl_433_Decoder_Stack 60000
+#  elif defined(RTL_VERBOSE) || defined(RTL_DEBUG)
+#    define rtl_433_Decoder_Stack 30000
 #  else
-#    define rtl_433_Decoder_Stack 20000
+#    if OOK_MODULATION
+#      define rtl_433_Decoder_Stack 11500
+#    else
+#      define rtl_433_Decoder_Stack 20000
+#    endif
 #  endif
 #endif
 
@@ -575,4 +577,4 @@ void processSignal(pulse_data_t* rtl_pulses) {
   } else {
     // logprintfLn(LOG_DEBUG, "processSignal() signal placed on rtl_433_Queue");
   }
-}
\ No newline at end of file
+}