diff --git a/devscripts/make_lazy_extractors.py b/devscripts/make_lazy_extractors.py
index 4e3514c0d..380e89261 100644
--- a/devscripts/make_lazy_extractors.py
+++ b/devscripts/make_lazy_extractors.py
@@ -75,7 +75,7 @@ def build_ies(ies, bases, attr_base):
         if ie in ies:
             names.append(ie.__name__)
 
-    class_lookup_contents = ', '.join(f"\'{name}\': {name}" for name in names)
+    class_lookup_contents = ', '.join(f"'{name}': {name}" for name in names)
     yield f'\n_CLASS_LOOKUP = {{ {class_lookup_contents} }}'