diff --git a/linkml/generators/jsonschemagen.py b/linkml/generators/jsonschemagen.py
index c89b712f7..f7ed6ee0c 100644
--- a/linkml/generators/jsonschemagen.py
+++ b/linkml/generators/jsonschemagen.py
@@ -225,7 +225,7 @@ def start_schema(self, inline: bool = False) -> JsonSchema:
         )
 
     def handle_class(self, cls: ClassDefinition) -> None:
-        if cls.mixin or cls.abstract:
+        if cls.abstract:
             return
 
         subschema_type = "object"