diff --git a/reflex/components/el/elements/forms.py b/reflex/components/el/elements/forms.py
index a343991d5..df906e7f6 100644
--- a/reflex/components/el/elements/forms.py
+++ b/reflex/components/el/elements/forms.py
@@ -102,7 +102,7 @@ class Fieldset(Element):
     name: Var[Union[str, int, bool]]
 
 
-def on_submit_event_spec() -> Tuple[Var[Dict[str, Any]]]:
+def on_submit_event_spec() -> Tuple[Var[Dict[str, str]]]:
     """Event handler spec for the on_submit event.
 
     Returns:
diff --git a/reflex/components/el/elements/forms.pyi b/reflex/components/el/elements/forms.pyi
index 135291213..afd52632b 100644
--- a/reflex/components/el/elements/forms.pyi
+++ b/reflex/components/el/elements/forms.pyi
@@ -270,7 +270,7 @@ class Fieldset(Element):
         """
         ...
 
-def on_submit_event_spec() -> Tuple[Var[Dict[str, Any]]]: ...
+def on_submit_event_spec() -> Tuple[Var[Dict[str, str]]]: ...
 
 class Form(BaseHTML):
     @overload
@@ -337,7 +337,7 @@ class Form(BaseHTML):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[EventType[Dict[str, str]]] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":
diff --git a/reflex/components/radix/primitives/form.pyi b/reflex/components/radix/primitives/form.pyi
index 2139f0c23..01e77e85c 100644
--- a/reflex/components/radix/primitives/form.pyi
+++ b/reflex/components/radix/primitives/form.pyi
@@ -129,7 +129,7 @@ class FormRoot(FormComponent, HTMLForm):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[EventType[Dict[str, str]]] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "FormRoot":
@@ -594,7 +594,7 @@ class Form(FormRoot):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[EventType[Dict[str, str]]] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":
@@ -716,7 +716,7 @@ class FormNamespace(ComponentNamespace):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[EventType[Dict[str, str]]] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":
diff --git a/reflex/event.py b/reflex/event.py
index 0a9664e62..a0c62a6b0 100644
--- a/reflex/event.py
+++ b/reflex/event.py
@@ -1015,17 +1015,23 @@ def call_event_handler(
             "See https://reflex.dev/docs/events/event-arguments/"
         )
 
-    def compare_types(specific_type, accepted_type):
+    def compare_types(provided_type, accepted_type):
         # Check if both are generic types (e.g., List)
-        if get_origin(specific_type) != get_origin(accepted_type):
+        if (get_origin(provided_type) or provided_type) != (
+            get_origin(accepted_type) or accepted_type
+        ):
             return False
 
         # Get type arguments (e.g., int vs. Union[float, int])
-        specific_args = get_args(specific_type)
+        provided_args = get_args(provided_type)
         accepted_args = get_args(accepted_type)
 
         # Ensure all specific types are compatible with accepted types
-        return all(issubclass(s, a) for s, a in zip(specific_args, accepted_args))
+        return all(
+            issubclass(provided_arg, accepted_arg)
+            for provided_arg, accepted_arg in zip(provided_args, accepted_args)
+            if accepted_arg is not Any
+        )
 
     event_spec_return_type = get_type_hints(arg_spec).get("return", None)