diff --git a/code/espurna/config/general.h b/code/espurna/config/general.h
index 07627e02..d43e32e7 100644
--- a/code/espurna/config/general.h
+++ b/code/espurna/config/general.h
@@ -731,7 +731,7 @@ PROGMEM const char* const custom_reset_string[] = {
 
 // 24 Buttons Set of the IR Remote
 #ifndef IR_BUTTON_SET
-#define IR_BUTTON_SET           1
+#define IR_BUTTON_SET           1               // IR button set to use (see below)
 #endif
 
 // IR Button modes
diff --git a/code/espurna/pwm.c b/code/espurna/pwm.c
index 5b5f306b..9a316bb8 100644
--- a/code/espurna/pwm.c
+++ b/code/espurna/pwm.c
@@ -25,7 +25,7 @@
   #define PWM_MAX_CHANNELS 8
 #endif
 #define PWM_DEBUG 0
-#define PWM_USE_NMI 0
+#define PWM_USE_NMI 1
 
 /* no user servicable parts beyond this point */