diff --git a/dom/bindings/Codegen.py b/dom/bindings/Codegen.py
index 27e83f5ffb7c..d91394fd0cd0 100644
--- a/dom/bindings/Codegen.py
+++ b/dom/bindings/Codegen.py
@@ -6060,7 +6060,7 @@ class CppKeywords():
     A class for checking if method names declared in webidl
     are not in conflict with C++ keywords.
     """
-    keywords = frozenset(['alignas', 'alignof', 'and', 'and_eq', 'asm', 'auto', 'bitand', 'bitor', 'bool',
+    keywords = frozenset(['alignas', 'alignof', 'and', 'and_eq', 'asm', 'assert', 'auto', 'bitand', 'bitor', 'bool',
     'break', 'case', 'catch', 'char', 'char16_t', 'char32_t', 'class', 'compl', 'const', 'constexpr',
     'const_cast', 'continue', 'decltype', 'default', 'delete', 'do', 'double', 'dynamic_cast', 'else', 'enum',
     'explicit', 'export', 'extern', 'false', 'final', 'float', 'for', 'friend', 'goto', 'if', 'inline',