diff --git a/odoo/addons/base/models/assetsbundle.py b/odoo/addons/base/models/assetsbundle.py
index 4b0cae5d189..5da435ef01c 100644
--- a/odoo/addons/base/models/assetsbundle.py
+++ b/odoo/addons/base/models/assetsbundle.py
@@ -489,13 +489,15 @@ class AssetsBundle(object):
         compiled = compiled.strip()
 
         # Post process the produced css to add required vendor prefixes here
-        compiled = re.sub(r'(appearance: (\w+);)', r'-webkit-appearance: \2; -moz-appearance: \2; \1', compiled);
+        compiled = re.sub(r'(appearance: (\w+);)', r'-webkit-appearance: \2; -moz-appearance: \2; \1', compiled)
 
-        compiled = re.sub(r'(display: ((?:inline-)?)flex((?: ?!important)?);)', r'display: -webkit-\2box\3; display: -webkit-\2flex\3; \1', compiled)  # For PhantomJS tests and wkhtmltopdf
-        compiled = re.sub(r'(justify-content: flex-(\w+)((?: ?!important)?);)', r'-webkit-box-pack: \2\3; \1', compiled)  # For wkhtmltopdf
-        compiled = re.sub(r'(flex-flow: (\w+ \w+);)', r'-webkit-flex-flow: \2; \1', compiled) # For PhantomJS tests
-        compiled = re.sub(r'(flex-direction: (column);)', r'-webkit-box-orient: vertical; -webkit-box-direction: normal; -webkit-flex-direction: \2; \1', compiled)  # For wkhtmltopdf
-        compiled = re.sub(r'(flex: ((\d)+ \d+ (?:\d+|auto));)', r'-webkit-box-flex: \3; -webkit-flex: \2; \1', compiled)  # For PhantomJS tests and wkhtmltopdf
+        # Most of those are only useful for wkhtmltopdf (some for old PhantomJS)
+        compiled = re.sub(r'(display: ((?:inline-)?)flex((?: ?!important)?);)', r'display: -webkit-\2box\3; display: -webkit-\2flex\3; \1', compiled)
+        compiled = re.sub(r'(justify-content: flex-(\w+)((?: ?!important)?);)', r'-webkit-box-pack: \2\3; \1', compiled)
+        compiled = re.sub(r'(flex-flow: (\w+ \w+);)', r'-webkit-flex-flow: \2; \1', compiled)
+        compiled = re.sub(r'(flex-direction: (column);)', r'-webkit-box-orient: vertical; -webkit-box-direction: normal; -webkit-flex-direction: \2; \1', compiled)
+        compiled = re.sub(r'(flex-wrap: (\w+);)', r'-webkit-flex-wrap: \2; \1', compiled)
+        compiled = re.sub(r'(flex: ((\d)+ \d+ (?:\d+|auto));)', r'-webkit-box-flex: \3; -webkit-flex: \2; \1', compiled)
 
         return compiled