diff --git a/substrate/frame/asset-conversion/src/lib.rs b/substrate/frame/asset-conversion/src/lib.rs
index 8802f4de9b..c97ab537a9 100644
--- a/substrate/frame/asset-conversion/src/lib.rs
+++ b/substrate/frame/asset-conversion/src/lib.rs
@@ -111,7 +111,7 @@ pub mod pallet {
 	use sp_std::prelude::*;
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/atomic-swap/src/lib.rs b/substrate/frame/atomic-swap/src/lib.rs
index ed89a88698..2d93887b82 100644
--- a/substrate/frame/atomic-swap/src/lib.rs
+++ b/substrate/frame/atomic-swap/src/lib.rs
@@ -184,7 +184,7 @@ pub mod pallet {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::storage]
 	pub type PendingSwaps<T: Config> = StorageDoubleMap<
diff --git a/substrate/frame/beefy/src/lib.rs b/substrate/frame/beefy/src/lib.rs
index d188226c37..d56d5b32f8 100644
--- a/substrate/frame/beefy/src/lib.rs
+++ b/substrate/frame/beefy/src/lib.rs
@@ -112,7 +112,7 @@ pub mod pallet {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	/// The current authorities set
 	#[pallet::storage]
diff --git a/substrate/frame/benchmarking/pov/src/lib.rs b/substrate/frame/benchmarking/pov/src/lib.rs
index 66000e5415..eb02ccc983 100644
--- a/substrate/frame/benchmarking/pov/src/lib.rs
+++ b/substrate/frame/benchmarking/pov/src/lib.rs
@@ -32,7 +32,7 @@ pub mod pallet {
 	use sp_std::prelude::*;
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/benchmarking/src/tests.rs b/substrate/frame/benchmarking/src/tests.rs
index 8694c78cb9..c3f51aeb53 100644
--- a/substrate/frame/benchmarking/src/tests.rs
+++ b/substrate/frame/benchmarking/src/tests.rs
@@ -35,7 +35,7 @@ mod pallet_test {
 	use frame_system::pallet_prelude::*;
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/contracts/src/lib.rs b/substrate/frame/contracts/src/lib.rs
index 42691d4b01..1812dce4b1 100644
--- a/substrate/frame/contracts/src/lib.rs
+++ b/substrate/frame/contracts/src/lib.rs
@@ -129,7 +129,7 @@ use pallet_contracts_primitives::{
 use scale_info::TypeInfo;
 use smallvec::Array;
 use sp_runtime::traits::{Convert, Hash, Saturating, StaticLookup, Zero};
-use sp_std::{fmt::Debug, marker::PhantomData, prelude::*};
+use sp_std::{fmt::Debug, prelude::*};
 
 pub use crate::{
 	address::{AddressGenerator, DefaultAddressGenerator},
@@ -191,7 +191,7 @@ pub mod pallet {
 
 	#[pallet::pallet]
 	#[pallet::storage_version(STORAGE_VERSION)]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/election-provider-multi-phase/src/lib.rs b/substrate/frame/election-provider-multi-phase/src/lib.rs
index 98fa880349..1960c458b9 100644
--- a/substrate/frame/election-provider-multi-phase/src/lib.rs
+++ b/substrate/frame/election-provider-multi-phase/src/lib.rs
@@ -1343,7 +1343,7 @@ pub mod pallet {
 	#[pallet::pallet]
 	#[pallet::without_storage_info]
 	#[pallet::storage_version(STORAGE_VERSION)]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 }
 
 impl<T: Config> Pallet<T> {
diff --git a/substrate/frame/elections-phragmen/src/lib.rs b/substrate/frame/elections-phragmen/src/lib.rs
index 559a024638..ee8bcc1de5 100644
--- a/substrate/frame/elections-phragmen/src/lib.rs
+++ b/substrate/frame/elections-phragmen/src/lib.rs
@@ -192,7 +192,7 @@ pub mod pallet {
 	#[pallet::pallet]
 	#[pallet::storage_version(STORAGE_VERSION)]
 	#[pallet::without_storage_info]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/indices/src/lib.rs b/substrate/frame/indices/src/lib.rs
index 56e177da31..bcc47c0089 100644
--- a/substrate/frame/indices/src/lib.rs
+++ b/substrate/frame/indices/src/lib.rs
@@ -75,7 +75,7 @@ pub mod pallet {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::call]
 	impl<T: Config> Pallet<T> {
diff --git a/substrate/frame/nft-fractionalization/src/lib.rs b/substrate/frame/nft-fractionalization/src/lib.rs
index 459d89f5a8..a6417cc385 100644
--- a/substrate/frame/nft-fractionalization/src/lib.rs
+++ b/substrate/frame/nft-fractionalization/src/lib.rs
@@ -86,7 +86,7 @@ pub mod pallet {
 	use sp_std::{fmt::Display, prelude::*};
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
diff --git a/substrate/frame/preimage/src/lib.rs b/substrate/frame/preimage/src/lib.rs
index 60208424db..5ab1e7643b 100644
--- a/substrate/frame/preimage/src/lib.rs
+++ b/substrate/frame/preimage/src/lib.rs
@@ -108,7 +108,7 @@ pub mod pallet {
 
 	#[pallet::pallet]
 	#[pallet::storage_version(STORAGE_VERSION)]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::event]
 	#[pallet::generate_deposit(pub(super) fn deposit_event)]
diff --git a/substrate/frame/scheduler/src/mock.rs b/substrate/frame/scheduler/src/mock.rs
index adb54fd78b..1b0fb81124 100644
--- a/substrate/frame/scheduler/src/mock.rs
+++ b/substrate/frame/scheduler/src/mock.rs
@@ -50,7 +50,7 @@ pub mod logger {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::hooks]
 	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {}
diff --git a/substrate/frame/sudo/src/lib.rs b/substrate/frame/sudo/src/lib.rs
index 50eb83810d..a41e479b61 100644
--- a/substrate/frame/sudo/src/lib.rs
+++ b/substrate/frame/sudo/src/lib.rs
@@ -59,7 +59,7 @@
 //! 	use frame_system::pallet_prelude::*;
 //!
 //! 	#[pallet::pallet]
-//! 	pub struct Pallet<T>(PhantomData<T>);
+//! 	pub struct Pallet<T>(_);
 //!
 //! 	#[pallet::config]
 //! 	pub trait Config: frame_system::Config {}
@@ -141,7 +141,7 @@ pub mod pallet {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::call]
 	impl<T: Config> Pallet<T> {
diff --git a/substrate/frame/sudo/src/mock.rs b/substrate/frame/sudo/src/mock.rs
index 95a6507c12..856cb35c87 100644
--- a/substrate/frame/sudo/src/mock.rs
+++ b/substrate/frame/sudo/src/mock.rs
@@ -39,7 +39,7 @@ pub mod logger {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::call]
 	impl<T: Config> Pallet<T> {
diff --git a/substrate/frame/support/src/dispatch.rs b/substrate/frame/support/src/dispatch.rs
index 8164b8361a..60404748a7 100644
--- a/substrate/frame/support/src/dispatch.rs
+++ b/substrate/frame/support/src/dispatch.rs
@@ -3582,7 +3582,7 @@ mod weight_tests {
 		use crate::pallet_prelude::*;
 
 		#[pallet::pallet]
-		pub struct Pallet<T>(PhantomData<T>);
+		pub struct Pallet<T>(_);
 
 		#[pallet::config]
 		#[pallet::disable_frame_system_supertrait_check]
diff --git a/substrate/frame/support/src/lib.rs b/substrate/frame/support/src/lib.rs
index 8f3f27538a..8c2fd4fb62 100644
--- a/substrate/frame/support/src/lib.rs
+++ b/substrate/frame/support/src/lib.rs
@@ -848,7 +848,7 @@ pub mod tests {
 		use crate::pallet_prelude::*;
 
 		#[pallet::pallet]
-		pub struct Pallet<T>(PhantomData<T>);
+		pub struct Pallet<T>(_);
 
 		#[pallet::config]
 		#[pallet::disable_frame_system_supertrait_check]
diff --git a/substrate/frame/support/src/storage/generator/mod.rs b/substrate/frame/support/src/storage/generator/mod.rs
index 3ca8a1fc27..349f5de3ef 100644
--- a/substrate/frame/support/src/storage/generator/mod.rs
+++ b/substrate/frame/support/src/storage/generator/mod.rs
@@ -53,7 +53,7 @@ mod tests {
 		use crate::pallet_prelude::*;
 
 		#[pallet::pallet]
-		pub struct Pallet<T>(PhantomData<T>);
+		pub struct Pallet<T>(_);
 
 		#[pallet::config]
 		#[pallet::disable_frame_system_supertrait_check]
diff --git a/substrate/frame/support/test/tests/final_keys.rs b/substrate/frame/support/test/tests/final_keys.rs
index 610f6532c5..f56a6c9fca 100644
--- a/substrate/frame/support/test/tests/final_keys.rs
+++ b/substrate/frame/support/test/tests/final_keys.rs
@@ -34,7 +34,7 @@ mod no_instance {
 	use frame_support_test as frame_system;
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {}
diff --git a/substrate/frame/support/test/tests/genesisconfig.rs b/substrate/frame/support/test/tests/genesisconfig.rs
index 48904baf1a..291b250c14 100644
--- a/substrate/frame/support/test/tests/genesisconfig.rs
+++ b/substrate/frame/support/test/tests/genesisconfig.rs
@@ -28,7 +28,7 @@ pub mod pallet {
 	use frame_support_test as frame_system;
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {}
diff --git a/substrate/frame/support/test/tests/issue2219.rs b/substrate/frame/support/test/tests/issue2219.rs
index eac67af274..3822fea030 100644
--- a/substrate/frame/support/test/tests/issue2219.rs
+++ b/substrate/frame/support/test/tests/issue2219.rs
@@ -80,7 +80,7 @@ mod module {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config + TypeInfo {}
diff --git a/substrate/frame/timestamp/src/lib.rs b/substrate/frame/timestamp/src/lib.rs
index 192c81502b..e707764beb 100644
--- a/substrate/frame/timestamp/src/lib.rs
+++ b/substrate/frame/timestamp/src/lib.rs
@@ -151,7 +151,7 @@ pub mod pallet {
 	}
 
 	#[pallet::pallet]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	/// Current time for the current block.
 	#[pallet::storage]
diff --git a/substrate/test-utils/runtime/src/substrate_test_pallet.rs b/substrate/test-utils/runtime/src/substrate_test_pallet.rs
index 20467523f7..0864c952b7 100644
--- a/substrate/test-utils/runtime/src/substrate_test_pallet.rs
+++ b/substrate/test-utils/runtime/src/substrate_test_pallet.rs
@@ -45,7 +45,7 @@ pub mod pallet {
 
 	#[pallet::pallet]
 	#[pallet::without_storage_info]
-	pub struct Pallet<T>(PhantomData<T>);
+	pub struct Pallet<T>(_);
 
 	#[pallet::config]
 	pub trait Config: frame_system::Config {}
diff --git a/substrate/utils/frame/rpc/support/src/lib.rs b/substrate/utils/frame/rpc/support/src/lib.rs
index eecc80c408..431bcdab03 100644
--- a/substrate/utils/frame/rpc/support/src/lib.rs
+++ b/substrate/utils/frame/rpc/support/src/lib.rs
@@ -94,7 +94,7 @@ use sp_storage::{StorageData, StorageKey};
 /// 	use frame_support::pallet_prelude::*;
 ///
 /// 	#[pallet::pallet]
-/// 	pub struct Pallet<T>(PhantomData<T>);
+/// 	pub struct Pallet<T>(_);
 ///
 /// 	#[pallet::config]
 /// 	pub trait Config: frame_system::Config {}