diff --git a/frame/asset-conversion/src/lib.rs b/frame/asset-conversion/src/lib.rs
index 8802f4de9b78f..c97ab537a945f 100644
--- a/frame/asset-conversion/src/lib.rs
+++ b/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/frame/atomic-swap/src/lib.rs b/frame/atomic-swap/src/lib.rs
index ed89a88698a3c..2d93887b82596 100644
--- a/frame/atomic-swap/src/lib.rs
+++ b/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/frame/beefy/src/lib.rs b/frame/beefy/src/lib.rs
index d188226c3739e..d56d5b32f8f36 100644
--- a/frame/beefy/src/lib.rs
+++ b/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/frame/benchmarking/pov/src/lib.rs b/frame/benchmarking/pov/src/lib.rs
index 66000e54151b0..eb02ccc983c09 100644
--- a/frame/benchmarking/pov/src/lib.rs
+++ b/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/frame/benchmarking/src/tests.rs b/frame/benchmarking/src/tests.rs
index 8694c78cb9dff..c3f51aeb53d5a 100644
--- a/frame/benchmarking/src/tests.rs
+++ b/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/frame/contracts/src/lib.rs b/frame/contracts/src/lib.rs
index 42691d4b01dc7..1812dce4b121f 100644
--- a/frame/contracts/src/lib.rs
+++ b/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/frame/election-provider-multi-phase/src/lib.rs b/frame/election-provider-multi-phase/src/lib.rs
index 98fa880349eeb..1960c458b983e 100644
--- a/frame/election-provider-multi-phase/src/lib.rs
+++ b/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/frame/elections-phragmen/src/lib.rs b/frame/elections-phragmen/src/lib.rs
index 559a024638e39..ee8bcc1de50a4 100644
--- a/frame/elections-phragmen/src/lib.rs
+++ b/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/frame/indices/src/lib.rs b/frame/indices/src/lib.rs
index 56e177da3148f..bcc47c0089bb8 100644
--- a/frame/indices/src/lib.rs
+++ b/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/frame/nft-fractionalization/src/lib.rs b/frame/nft-fractionalization/src/lib.rs
index 459d89f5a8146..a6417cc3857d4 100644
--- a/frame/nft-fractionalization/src/lib.rs
+++ b/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/frame/preimage/src/lib.rs b/frame/preimage/src/lib.rs
index 60208424db953..5ab1e7643b2e7 100644
--- a/frame/preimage/src/lib.rs
+++ b/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/frame/scheduler/src/mock.rs b/frame/scheduler/src/mock.rs
index adb54fd78b181..1b0fb8112469c 100644
--- a/frame/scheduler/src/mock.rs
+++ b/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/frame/sudo/src/lib.rs b/frame/sudo/src/lib.rs
index 50eb83810d55e..a41e479b6154d 100644
--- a/frame/sudo/src/lib.rs
+++ b/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/frame/sudo/src/mock.rs b/frame/sudo/src/mock.rs
index 95a6507c12dd5..856cb35c8718c 100644
--- a/frame/sudo/src/mock.rs
+++ b/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/frame/support/src/dispatch.rs b/frame/support/src/dispatch.rs
index 8164b8361af87..60404748a7cf2 100644
--- a/frame/support/src/dispatch.rs
+++ b/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/frame/support/src/lib.rs b/frame/support/src/lib.rs
index 8f3f27538a907..8c2fd4fb62e37 100644
--- a/frame/support/src/lib.rs
+++ b/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/frame/support/src/storage/generator/mod.rs b/frame/support/src/storage/generator/mod.rs
index 3ca8a1fc27236..349f5de3ef3bc 100644
--- a/frame/support/src/storage/generator/mod.rs
+++ b/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/frame/support/test/tests/final_keys.rs b/frame/support/test/tests/final_keys.rs
index 610f6532c52d0..f56a6c9fcaaa1 100644
--- a/frame/support/test/tests/final_keys.rs
+++ b/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/frame/support/test/tests/genesisconfig.rs b/frame/support/test/tests/genesisconfig.rs
index 48904baf1ad62..291b250c146b2 100644
--- a/frame/support/test/tests/genesisconfig.rs
+++ b/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/frame/support/test/tests/issue2219.rs b/frame/support/test/tests/issue2219.rs
index eac67af274f87..3822fea030d15 100644
--- a/frame/support/test/tests/issue2219.rs
+++ b/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/frame/timestamp/src/lib.rs b/frame/timestamp/src/lib.rs
index 192c81502bf6e..e707764beb95c 100644
--- a/frame/timestamp/src/lib.rs
+++ b/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/test-utils/runtime/src/substrate_test_pallet.rs b/test-utils/runtime/src/substrate_test_pallet.rs
index 20467523f7375..0864c952b70c4 100644
--- a/test-utils/runtime/src/substrate_test_pallet.rs
+++ b/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/utils/frame/rpc/support/src/lib.rs b/utils/frame/rpc/support/src/lib.rs
index eecc80c408efd..431bcdab03288 100644
--- a/utils/frame/rpc/support/src/lib.rs
+++ b/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 {}