diff --git a/examples/LeonardoUsbSlaveMidiClockMonitor/LeonardoUsbSlaveMidiClockMonitor.ino b/examples/LeonardoUsbSlaveMidiClockMonitor/LeonardoUsbSlaveMidiClockMonitor.ino
index 2a703cb..cda6b6a 100644
--- a/examples/LeonardoUsbSlaveMidiClockMonitor/LeonardoUsbSlaveMidiClockMonitor.ino
+++ b/examples/LeonardoUsbSlaveMidiClockMonitor/LeonardoUsbSlaveMidiClockMonitor.ino
@@ -28,7 +28,7 @@ U8X8 * u8x8;
 #define MIDI_START 0xFA
 #define MIDI_STOP  0xFC
 
-char bpm_str[4];
+char bpm_str[8];
 float bpm = 126.0;
 uint8_t bpm_blink_timer = 1;
 uint8_t clock_state = 1;
diff --git a/examples/TeensyUsbSlaveMidiClockMonitor/TeensyUsbSlaveMidiClockMonitor.ino b/examples/TeensyUsbSlaveMidiClockMonitor/TeensyUsbSlaveMidiClockMonitor.ino
index 37e249e..74f18d7 100644
--- a/examples/TeensyUsbSlaveMidiClockMonitor/TeensyUsbSlaveMidiClockMonitor.ino
+++ b/examples/TeensyUsbSlaveMidiClockMonitor/TeensyUsbSlaveMidiClockMonitor.ino
@@ -29,7 +29,7 @@ IntervalTimer teensyTimer;
 #define MIDI_START 0xFA
 #define MIDI_STOP  0xFC
 
-char bpm_str[4];
+char bpm_str[8];
 float bpm = 126;
 uint8_t bpm_blink_timer = 1;
 uint8_t clock_state = 1;