diff --git a/MicroDexed.ino b/MicroDexed.ino
index 00f153d..0a80b29 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -280,7 +280,7 @@ AudioConnection* dynamicConnections[NUM_DEXED * 15 + NUM_DRUMS * 4];
 #else
 AudioConnection* dynamicConnections[NUM_DEXED * 4 + NUM_DRUMS * 2];
 #endif
-void create_audio_dexed_chain(uint8_t instance_id)
+FLASHMEM void create_audio_dexed_chain(uint8_t instance_id)
 {
   MicroDexed[instance_id] = new AudioSynthDexed(MAX_NOTES / NUM_DEXED, SAMPLE_RATE);
   mono2stereo[instance_id] = new AudioEffectMonoStereo();
@@ -331,7 +331,7 @@ void create_audio_dexed_chain(uint8_t instance_id)
 // Dynamic patching of Drum objects
 //
 #if NUM_DRUMS > 0
-void create_audio_drum_chain(uint8_t instance_id)
+FLASHMEM void create_audio_drum_chain(uint8_t instance_id)
 {
   //Drum[instance_id] = new AudioPlayMemory();
   Drum[instance_id] = new AudioPlayArrayResmp();
@@ -2585,7 +2585,7 @@ void generate_version_string(char* buffer, uint8_t len)
 #endif
 }
 
-uint8_t check_sd_cards(void)
+FLASHMEM uint8_t check_sd_cards(void)
 {
   uint8_t ret = 0;
 
@@ -2689,7 +2689,7 @@ uint8_t check_sd_cards(void)
   return (ret);
 }
 
-void check_and_create_directories(void)
+FLASHMEM void check_and_create_directories(void)
 {
   if (sd_card > 0)
   {
diff --git a/UI.hpp b/UI.hpp
index 50c4784..6121fc7 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -540,7 +540,7 @@ uint8_t * rotTile(const uint8_t * tile)
 }
 #endif
 
-void setup_ui(void)
+FLASHMEM void setup_ui(void)
 {
   // LCD Begin
 #ifdef I2C_DISPLAY
@@ -564,7 +564,7 @@ void setup_ui(void)
 }
 
 #ifdef DEBUG
-void setup_debug_message(void)
+FLASHMEM void setup_debug_message(void)
 {
   // LCD Begin
   display.clear();
diff --git a/midi_devices.hpp b/midi_devices.hpp
index 90544d0..6dca28e 100644
--- a/midi_devices.hpp
+++ b/midi_devices.hpp
@@ -108,7 +108,7 @@ void handle_generic(byte inChannel, byte inData1, byte inData2, const char *midi
       break;
   }
 #ifdef DEBUG
-  Serial.printf("[%s] %s", midi_device, text);
+  Serial.printf_P(PSTR("[%s] %s"), midi_device, text);
 #endif
 
   // MIDI THRU
@@ -222,7 +222,7 @@ void handle_generic(byte inChannel, byte inData1, byte inData2, const char *midi
 void handleSystemExclusive_generic(byte *data, uint len, const char *midi_device) {
   handleSystemExclusive(data, len);
 #ifdef DEBUG
-  Serial.printf("[%s] SysEx", midi_device);
+  Serial.printf_P(PSTR("[%s] SysEx"), midi_device);
 #endif
 
   // MIDI THRU
@@ -282,7 +282,7 @@ void handleSystemCommon_generic(byte inData1, const char *midi_device, midi::Mid
       break;
   }
 #ifdef DEBUG
-  Serial.printf("[%s] %s", midi_device, text);
+  Serial.printf_P(PSTR("[%s] %s"), midi_device, text);
 #endif
 
   // MIDI THRU
@@ -390,7 +390,7 @@ void handleRealtime_generic(const char *midi_device, midi::MidiType event)
       break;
   }
 #ifdef DEBUG
-  Serial.printf("[%s] %s", midi_device, text);
+  Serial.printf_P(PSTR("[%s] %s"), midi_device, text);
 #endif
 
   // MIDI THRU