diff --git a/wa/utils/log.py b/wa/utils/log.py
index 24d82e9c..61ebac46 100644
--- a/wa/utils/log.py
+++ b/wa/utils/log.py
@@ -159,9 +159,9 @@ def log_error(e, logger, critical=False):
 
     :e: the error to log. should be an instance of ``Exception``
     :logger: logger to be used.
-    :critical: if ``True``,  this error will be logged at ``logging.CRITICAL`` 
+    :critical: if ``True``,  this error will be logged at ``logging.CRITICAL``
                level, otherwise it will be logged as ``logging.ERROR``.
-    
+
     """
     if critical:
         log_func = logger.critical
@@ -171,7 +171,7 @@ def log_error(e, logger, critical=False):
     if isinstance(e, KeyboardInterrupt):
         log_func('Got CTRL-C. Aborting.')
     elif isinstance(e, WAError) or isinstance(e, DevlibError):
-        log_func(e)
+        log_func(str(e))
     elif isinstance(e, subprocess.CalledProcessError):
         tb = get_traceback()
         log_func(tb)