diff --git a/lifemonitor/errors.py b/lifemonitor/errors.py
index b4dfbee4..7de4d74f 100644
--- a/lifemonitor/errors.py
+++ b/lifemonitor/errors.py
@@ -24,8 +24,6 @@
 
 from flask import Blueprint, escape, render_template, request, url_for
 
-from lifemonitor.utils import validate_url
-
 # Config a module level logger
 logger = logging.getLogger(__name__)
 
@@ -84,6 +82,7 @@ def handle_400(e: Exception = None, description: str = None):
 def handle_404(e: Exception = None):
     resource = request.args.get("resource", None, type=str)
     logger.debug(f"Resource not found: {resource}")
+    from lifemonitor.utils import validate_url
     if resource and not validate_url(resource):
         logger.error(f"Invalid URL: {resource}")
         return handle_400(description="Invalid URL")
@@ -103,6 +102,7 @@ def handle_404(e: Exception = None):
 def handle_405(e: Exception = None):
     resource = request.args.get("resource", None, type=str)
     logger.debug(f"Method not allowed for resource {resource}")
+    from lifemonitor.utils import validate_url
     if not validate_url(resource):
         return handle_400(decription="Invalid URL")
     return __handle_error__(
diff --git a/lifemonitor/exceptions.py b/lifemonitor/exceptions.py
index ea4e6da4..e186b9ce 100644
--- a/lifemonitor/exceptions.py
+++ b/lifemonitor/exceptions.py
@@ -26,8 +26,6 @@
 
 from lifemonitor import serializers
 
-from .errors import handle_error
-
 logger = logging.getLogger(__name__)
 
 
@@ -229,6 +227,7 @@ def handle_exception(e: Exception):
     if logger.isEnabledFor(logging.DEBUG):
         logger.exception(e)
     if isinstance(e, LifeMonitorException):
+        from .errors import handle_error
         if request.accept_mimetypes.best == "text/html":
             return handle_error(e)
         return Response(response=e.to_json(),
@@ -259,6 +258,7 @@ def report_problem(status, title, detail=None, type=None, instance=None, extra_i
     Returns a `Problem Details <https://tools.ietf.org/html/draft-ietf-appsawg-http-problem-00>`_ error response.
     """
     if request.accept_mimetypes.best == "text/html":
+        from .errors import handle_error
         return handle_error(LifeMonitorException(title=title, detail=detail, status=status))
     if not type:
         type = 'about:blank'