diff --git a/substrate/srml/democracy/src/lib.rs b/substrate/srml/democracy/src/lib.rs
index ee110f27e9..5a1c61b8ae 100644
--- a/substrate/srml/democracy/src/lib.rs
+++ b/substrate/srml/democracy/src/lib.rs
@@ -25,7 +25,7 @@ use sr_primitives::weights::SimpleDispatchInfo;
 use codec::{Encode, Decode, Input, Output, Error};
 use srml_support::{
 	decl_module, decl_storage, decl_event, ensure,
-	StorageValue, StorageMap, Parameter, Dispatchable, IsSubType, EnumerableStorageMap,
+	StorageValue, StorageMap, Parameter, Dispatchable, EnumerableStorageMap,
 	traits::{
 		Currency, ReservableCurrency, LockableCurrency, WithdrawReason, LockIdentifier,
 		OnFreeBalanceZero, Get
@@ -182,7 +182,7 @@ pub const DEFAULT_EMERGENCY_VOTING_PERIOD: u32 = 0;
 pub const DEFAULT_COOLOFF_PERIOD: u32 = 0;
 
 pub trait Trait: system::Trait + Sized {
-	type Proposal: Parameter + Dispatchable<Origin=Self::Origin> + IsSubType<Module<Self>, Self>;
+	type Proposal: Parameter + Dispatchable<Origin=Self::Origin>;
 	type Event: From<Event<Self>> + Into<<Self as system::Trait>::Event>;
 
 	/// Currency type for this module.
diff --git a/substrate/srml/support/src/dispatch.rs b/substrate/srml/support/src/dispatch.rs
index 294fe3795e..21a2a817fb 100644
--- a/substrate/srml/support/src/dispatch.rs
+++ b/substrate/srml/support/src/dispatch.rs
@@ -1264,7 +1264,7 @@ macro_rules! decl_module {
 }
 
 pub trait IsSubType<T: Callable<R>, R> {
-	fn is_aux_sub_type(&self) -> Option<&CallableCallFor<T, R>>;
+	fn is_sub_type(&self) -> Option<&CallableCallFor<T, R>>;
 }
 
 /// Implement a meta-dispatch module to dispatch to other dispatchers.
@@ -1305,7 +1305,7 @@ macro_rules! impl_outer_dispatch {
 		$(
 			impl $crate::dispatch::IsSubType<$camelcase, $runtime> for $call_type {
 				#[allow(unreachable_patterns)]
-				fn is_aux_sub_type(&self) -> Option<&$crate::dispatch::CallableCallFor<$camelcase, $runtime>> {
+				fn is_sub_type(&self) -> Option<&$crate::dispatch::CallableCallFor<$camelcase, $runtime>> {
 					match *self {
 						$call_type::$camelcase(ref r) => Some(r),
 						// May be unreachable