diff --git a/odoo/addons/base/models/assetsbundle.py b/odoo/addons/base/models/assetsbundle.py
index 0a2f0e36665..cbf73021bc0 100644
--- a/odoo/addons/base/models/assetsbundle.py
+++ b/odoo/addons/base/models/assetsbundle.py
@@ -876,7 +876,7 @@ class JavascriptAsset(WebAsset):
 
 class StylesheetAsset(WebAsset):
     rx_import = re.compile(r"""@import\s+('|")(?!'|"|/|https?://)""", re.U)
-    rx_url = re.compile(r"""url\s*\(\s*('|"|)(?!'|"|/|https?://|data:)""", re.U)
+    rx_url = re.compile(r"""(?<!")url\s*\(\s*('|"|)(?!'|"|/|https?://|data:|#{str)""", re.U)
     rx_sourceMap = re.compile(r'(/\*# sourceMappingURL=.*)', re.U)
     rx_charset = re.compile(r'(@charset "[^"]+";)', re.U)
 
@@ -1062,5 +1062,4 @@ class LessStylesheetAsset(PreprocessedCSS):
                 lessc = misc.find_in_path('lessc')
         except IOError:
             lessc = 'lessc'
-        lesspath = get_resource_path('web', 'static', 'lib', 'bootstrap', 'less')
-        return [lessc, '-', '--no-js', '--no-color', '--include-path=%s' % lesspath]
+        return [lessc, '-', '--no-js', '--no-color']