diff --git a/Tools/HIL/monitor_firmware_upload.py b/Tools/HIL/monitor_firmware_upload.py
index c56b0a48ab..b5df4691b6 100755
--- a/Tools/HIL/monitor_firmware_upload.py
+++ b/Tools/HIL/monitor_firmware_upload.py
@@ -30,8 +30,11 @@ def print_line(line):
     if "FAILED" in line:
         line = line.replace("FAILED", f"{COLOR_RED}FAILED{COLOR_RESET}", 1)
 
-    current_time = datetime.datetime.now()
-    print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    if "\n" in line:
+        current_time = datetime.datetime.now()
+        print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    else:
+        print('{0}'.format(line), end='')
 
 def monitor_firmware_upload(port, baudrate):
     ser = serial.Serial(port, baudrate, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=1, xonxoff=True, rtscts=False, dsrdtr=False)
diff --git a/Tools/HIL/run_nsh_cmd.py b/Tools/HIL/run_nsh_cmd.py
index 5534e7d326..1874f6e599 100755
--- a/Tools/HIL/run_nsh_cmd.py
+++ b/Tools/HIL/run_nsh_cmd.py
@@ -30,8 +30,12 @@ def print_line(line):
     if "FAILED" in line:
         line = line.replace("FAILED", f"{COLOR_RED}FAILED{COLOR_RESET}", 1)
 
-    current_time = datetime.datetime.now()
-    print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    if "\n" in line:
+        current_time = datetime.datetime.now()
+        print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    else:
+        print('{0}'.format(line), end='')
+
 
 def do_nsh_cmd(port, baudrate, cmd):
     ser = serial.Serial(port, baudrate, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=0.2, xonxoff=True, rtscts=False, dsrdtr=False)
diff --git a/Tools/HIL/run_tests.py b/Tools/HIL/run_tests.py
index 4682c25c31..bca707cc7c 100755
--- a/Tools/HIL/run_tests.py
+++ b/Tools/HIL/run_tests.py
@@ -32,8 +32,11 @@ def print_line(line):
     if "FAILED" in line:
         line = line.replace("FAILED", f"{COLOR_RED}FAILED{COLOR_RESET}", 1)
 
-    current_time = datetime.datetime.now()
-    print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    if "\n" in line:
+        current_time = datetime.datetime.now()
+        print('[{0}] {1}'.format(current_time.isoformat(timespec='milliseconds'), line), end='')
+    else:
+        print('{0}'.format(line), end='')
 
 def do_test(port, baudrate, test_name):
     ser = serial.Serial(port, baudrate, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, timeout=0.2, xonxoff=True, rtscts=False, dsrdtr=False)