diff --git a/src/lib/log.py b/src/lib/log.py
new file mode 100644
index 0000000000..057317a936
--- /dev/null
+++ b/src/lib/log.py
@@ -0,0 +1,45 @@
+import sys
+import utime
+
+NOTSET = const(0)
+DEBUG = const(10)
+INFO = const(20)
+WARNING = const(30)
+ERROR = const(40)
+CRITICAL = const(50)
+
+_leveldict = {
+    DEBUG: ('DEBUG', '32'),
+    INFO: ('INFO', '36'),
+    WARNING: ('WARNING', '33'),
+    ERROR: ('ERROR', '31'),
+    CRITICAL: ('CRITICAL', '1;31'),
+}
+
+level = NOTSET
+color = True
+
+def _log(mlevel, msg, *args):
+    global level
+    if mlevel >= level:
+        name = 'name'
+        if color:
+            fmt = '%d \x1b[35m%s\x1b[0m %s \x1b[' + _leveldict[mlevel][1] + 'm' + msg + '\x1b[0m'
+        else:
+            fmt = '%d %s %s ' + msg
+        print(fmt % ((utime.ticks_us(), name, _leveldict[mlevel][0]) + args), file=sys.stderr)
+
+def debug(msg, *args):
+    _log(DEBUG, msg, *args)
+
+def info(msg, *args):
+    _log(INFO, msg, *args)
+
+def warning(msg, *args):
+    _log(WARNING, msg, *args)
+
+def error(msg, *args):
+    _log(ERROR, msg, *args)
+
+def critical(msg, *args):
+    _log(CRITICAL, msg, *args)
diff --git a/src/lib/logging.py b/src/lib/logging.py
deleted file mode 100644
index 92f10bba45..0000000000
--- a/src/lib/logging.py
+++ /dev/null
@@ -1,77 +0,0 @@
-import sys
-
-# raise Exception("Disabled")
-
-CRITICAL = const(50)
-ERROR = const(40)
-WARNING = const(30)
-INFO = const(20)
-DEBUG = const(10)
-NOTSET = const(0)
-
-_level_dict = {
-    CRITICAL: "CRIT",
-    ERROR: "ERROR",
-    WARNING: "WARN",
-    INFO: "INFO",
-    DEBUG: "DEBUG",
-}
-
-_stream = sys.stderr
-
-class Logger:
-
-    def __init__(self, name):
-        self.level = NOTSET
-        self.name = name
-
-    def _level_str(self, level):
-        if level in _level_dict:
-            return _level_dict[level]
-        return "LVL" + str(level)
-
-    def log(self, level, msg, *args):
-        if level >= (self.level or _level):
-            print(("%s:%s:" + msg) % ((self._level_str(level), self.name) + args), file=_stream)
-
-    def debug(self, msg, *args):
-        self.log(DEBUG, msg, *args)
-
-    def info(self, msg, *args):
-        self.log(INFO, msg, *args)
-
-    def warning(self, msg, *args):
-        self.log(WARNING, msg, *args)
-
-    def error(self, msg, *args):
-        self.log(ERROR, msg, *args)
-
-    def critical(self, msg, *args):
-        self.log(CRITICAL, msg, *args)
-
-
-_level = INFO
-_loggers = {}
-
-def getLogger(name):
-    if name in _loggers:
-        return _loggers[name]
-    l = Logger(name)
-    _loggers[name] = l
-    return l
-
-def info(msg, *args):
-    getLogger(None).info(msg, *args)
-
-def debug(msg, *args):
-    getLogger(None).debug(msg, *args)
-
-def basicConfig(level=INFO, filename=None, stream=None, format=None):
-    global _level, _stream
-    _level = level
-    if stream:
-        _stream = stream
-    if filename is not None:
-        print("logging.basicConfig: filename arg is not supported")
-    if format is not None:
-        print("logging.basicConfig: format arg is not supported")
diff --git a/src/trezor/loop.py b/src/trezor/loop.py
index bacdac4840..7231c48104 100644
--- a/src/trezor/loop.py
+++ b/src/trezor/loop.py
@@ -5,9 +5,7 @@ from .utils import type_gen
 from . import msg
 from . import ui
 
-if __debug__:
-    import logging
-    log = logging.getLogger("trezor.loop")
+import log
 
 q = []
 cnt = 0
diff --git a/src/trezor/main.py b/src/trezor/main.py
index 435e129e9b..a1b08af42f 100644
--- a/src/trezor/main.py
+++ b/src/trezor/main.py
@@ -6,10 +6,6 @@ import gc
 from trezor import loop
 from trezor import layout
 
-if __debug__:
-    import logging
-    logging.basicConfig(level=logging.INFO)
-
 def perf_info_debug():
     while True:
         queue = [str(x[2]).split("'")[1] for x in loop.q]