diff --git a/polkadot/runtime/kusama/Cargo.toml b/polkadot/runtime/kusama/Cargo.toml
index 96a007435455f..8b0f59516c6df 100644
--- a/polkadot/runtime/kusama/Cargo.toml
+++ b/polkadot/runtime/kusama/Cargo.toml
@@ -338,12 +338,6 @@ try-runtime = [
 	"runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-# When enabled, the runtime API will not be build.
-#
-# This is required by Cumulus to access certain types of the
-# runtime without clashing with the runtime API exported functions
-# in WASM.
-disable-runtime-api = []
 
 # A feature that should be enabled when the runtime should be build for on-chain
 # deployment. This will disable stuff that shouldn't be part of the on-chain wasm
diff --git a/polkadot/runtime/kusama/src/lib.rs b/polkadot/runtime/kusama/src/lib.rs
index e9e3fb2d2026f..ac80f88cfaa2a 100644
--- a/polkadot/runtime/kusama/src/lib.rs
+++ b/polkadot/runtime/kusama/src/lib.rs
@@ -139,10 +139,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	authoring_version: 2,
 	spec_version: 9430,
 	impl_version: 0,
-	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
-	#[cfg(feature = "disable-runtime-api")]
-	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 23,
 	state_version: 1,
 };
@@ -1820,7 +1817,6 @@ mod benches {
 	);
 }
 
-#[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {
diff --git a/polkadot/runtime/polkadot/Cargo.toml b/polkadot/runtime/polkadot/Cargo.toml
index 48f720caa6450..d185677ab8d27 100644
--- a/polkadot/runtime/polkadot/Cargo.toml
+++ b/polkadot/runtime/polkadot/Cargo.toml
@@ -307,12 +307,6 @@ try-runtime = [
 	"runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-# When enabled, the runtime API will not be build.
-#
-# This is required by Cumulus to access certain types of the
-# runtime without clashing with the runtime API exported functions
-# in WASM.
-disable-runtime-api = []
 
 # A feature that should be enabled when the runtime should be build for on-chain
 # deployment. This will disable stuff that shouldn't be part of the on-chain wasm
diff --git a/polkadot/runtime/polkadot/src/lib.rs b/polkadot/runtime/polkadot/src/lib.rs
index c4458076cb3d9..f97c0981039f0 100644
--- a/polkadot/runtime/polkadot/src/lib.rs
+++ b/polkadot/runtime/polkadot/src/lib.rs
@@ -130,10 +130,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	authoring_version: 0,
 	spec_version: 9430,
 	impl_version: 0,
-	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
-	#[cfg(feature = "disable-runtime-api")]
-	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 24,
 	state_version: 0,
 };
@@ -1599,7 +1596,6 @@ mod benches {
 	);
 }
 
-#[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {
diff --git a/polkadot/runtime/rococo/Cargo.toml b/polkadot/runtime/rococo/Cargo.toml
index 4c268c3e2b6f1..aa94d5914d66c 100644
--- a/polkadot/runtime/rococo/Cargo.toml
+++ b/polkadot/runtime/rococo/Cargo.toml
@@ -282,12 +282,6 @@ try-runtime = [
 	"runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-# When enabled, the runtime API will not be build.
-#
-# This is required by Cumulus to access certain types of the
-# runtime without clashing with the runtime API exported functions
-# in WASM.
-disable-runtime-api = []
 
 # Set timing constants (e.g. session period) to faster versions to speed up testing.
 fast-runtime = []
diff --git a/polkadot/runtime/rococo/src/lib.rs b/polkadot/runtime/rococo/src/lib.rs
index 6894bd7bbf442..192f4117ba6db 100644
--- a/polkadot/runtime/rococo/src/lib.rs
+++ b/polkadot/runtime/rococo/src/lib.rs
@@ -116,10 +116,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	authoring_version: 0,
 	spec_version: 9430,
 	impl_version: 0,
-	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
-	#[cfg(feature = "disable-runtime-api")]
-	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 22,
 	state_version: 1,
 };
@@ -1647,7 +1644,6 @@ mod benches {
 	);
 }
 
-#[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {
diff --git a/polkadot/runtime/westend/Cargo.toml b/polkadot/runtime/westend/Cargo.toml
index add80488a64c9..dc5bdaf6559d2 100644
--- a/polkadot/runtime/westend/Cargo.toml
+++ b/polkadot/runtime/westend/Cargo.toml
@@ -311,12 +311,6 @@ try-runtime = [
 	"runtime-parachains/try-runtime",
 	"sp-runtime/try-runtime",
 ]
-# When enabled, the runtime API will not be build.
-#
-# This is required by Cumulus to access certain types of the
-# runtime without clashing with the runtime API exported functions
-# in WASM.
-disable-runtime-api = []
 
 # Set timing constants (e.g. session period) to faster versions to speed up testing.
 fast-runtime = []
diff --git a/polkadot/runtime/westend/src/lib.rs b/polkadot/runtime/westend/src/lib.rs
index 9ae30c376010e..12baa20a129f4 100644
--- a/polkadot/runtime/westend/src/lib.rs
+++ b/polkadot/runtime/westend/src/lib.rs
@@ -121,10 +121,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	authoring_version: 2,
 	spec_version: 9430,
 	impl_version: 0,
-	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
-	#[cfg(feature = "disable-runtime-api")]
-	apis: sp_version::create_apis_vec![[]],
 	transaction_version: 22,
 	state_version: 1,
 };
@@ -1494,7 +1491,6 @@ mod benches {
 	);
 }
 
-#[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {
 		fn version() -> RuntimeVersion {