diff --git a/examples/jacket_midi_print_ringbuffer.nim b/examples/jacket_midi_print_ringbuffer.nim
index 15195d5..bd0d6d5 100644
--- a/examples/jacket_midi_print_ringbuffer.nim
+++ b/examples/jacket_midi_print_ringbuffer.nim
@@ -73,7 +73,7 @@ proc midiEventPrinterProc() {.thread.} =
 
             if recvBuf[0] <= 3:
                 for i in 0..<recvBuf[0].int:
-                    stdout.write(fmt"{recvBuf[i+1]:#02X} ")
+                    stdout.write(fmt"0x{recvBuf[i+1]:02X} ")
 
                 stdout.write("\n")
                 stdout.flushFile()
diff --git a/examples/jacket_midi_print_threading.nim b/examples/jacket_midi_print_threading.nim
index 6fa0508..24270e0 100644
--- a/examples/jacket_midi_print_threading.nim
+++ b/examples/jacket_midi_print_threading.nim
@@ -67,7 +67,7 @@ proc midiEventPrinterProc() =
             break
         elif event.size <= 3:
             for i in 0..<event.size:
-                stdout.write(fmt"{event.buffer[i]:#02X} ")
+                stdout.write(fmt"0x{event.buffer[i]:02X} ")
 
             stdout.write("\n")
             stdout.flushFile()